WebHost/Core/Lingo: Render option documentation as reStructuredText in the WebView (#3511)

* Render option documentation as reStructuredText in the WebView

This means that options can use the standard Python documentation
format, while producing much nicer-looking documentation in the
WebView with things like emphasis, lists, and so on.

* Opt existing worlds out of rich option docs

This avoids breaking the rendering of existing option docs which were
written with the old plain text rendering in mind, while also allowing
new options to default to the rich text rendering instead.

* Use reStructuredText formatting for Lingo Options docstrings

* Disable raw and file insertion RST directives

* Update doc comments per code review

* Make rich text docs opt-in

* Put rich_text_options_doc on WebWorld

* Document rich text API

* Code review

* Update docs/options api.md

Co-authored-by: Doug Hoskisson <beauxq@users.noreply.github.com>

* Update Options.py

Co-authored-by: Doug Hoskisson <beauxq@users.noreply.github.com>

---------

Co-authored-by: Chris Wilson <chris@legendserver.info>
Co-authored-by: Doug Hoskisson <beauxq@users.noreply.github.com>

Options.py

@@ -126,6 +126,23 @@ class Option(typing.Generic[T], metaclass=AssembleOptions):
     # can be weighted between selections
     supports_weighting = True
 
+    rich_text_doc: typing.Optional[bool] = None
+    """Whether the WebHost should render the Option's docstring as rich text.
+
+    If this is True, the Option's docstring is interpreted as reStructuredText_,
+    the standard Python markup format. In the WebHost, it's rendered to HTML so
+    that lists, emphasis, and other rich text features are displayed properly.
+
+    If this is False, the docstring is instead interpreted as plain text, and
+    displayed as-is on the WebHost with whitespace preserved.
+
+    If this is None, it inherits the value of `World.rich_text_options_doc`. For
+    backwards compatibility, this defaults to False, but worlds are encouraged to
+    set it to True and use reStructuredText for their Option documentation.
+
+    .. _reStructuredText: https://docutils.sourceforge.io/rst.html
+    """
+
     # filled by AssembleOptions:
     name_lookup: typing.ClassVar[typing.Dict[T, str]]  # type: ignore
     # https://github.com/python/typing/discussions/1460 the reason for this type: ignore
@@ -1127,10 +1144,13 @@ class PlandoConnections(Option[typing.List[PlandoConnection]], metaclass=Connect
 
 class Accessibility(Choice):
     """Set rules for reachability of your items/locations.
-    Locations: ensure everything can be reached and acquired.
-    Items: ensure all logically relevant items can be acquired.
-    Minimal: ensure what is needed to reach your goal can be acquired."""
+
+    - **Locations:** ensure everything can be reached and acquired.
+    - **Items:** ensure all logically relevant items can be acquired.
+    - **Minimal:** ensure what is needed to reach your goal can be acquired.
+    """
     display_name = "Accessibility"
+    rich_text_doc = True
     option_locations = 0
     option_items = 1
     option_minimal = 2
@@ -1139,14 +1159,15 @@ class Accessibility(Choice):
 
 
 class ProgressionBalancing(NamedRange):
-    """
-    A system that can move progression earlier, to try and prevent the player from getting stuck and bored early.
+    """A system that can move progression earlier, to try and prevent the player from getting stuck and bored early.
+
     A lower setting means more getting stuck. A higher setting means less getting stuck.
     """
     default = 50
     range_start = 0
     range_end = 99
     display_name = "Progression Balancing"
+    rich_text_doc = True
     special_range_names = {
         "disabled": 0,
         "normal": 50,
@@ -1211,29 +1232,36 @@ class CommonOptions(metaclass=OptionsMetaProperty):
 class LocalItems(ItemSet):
     """Forces these items to be in their native world."""
     display_name = "Local Items"
+    rich_text_doc = True
 
 
 class NonLocalItems(ItemSet):
     """Forces these items to be outside their native world."""
     display_name = "Non-local Items"
+    rich_text_doc = True
 
 
 class StartInventory(ItemDict):
     """Start with these items."""
     verify_item_name = True
     display_name = "Start Inventory"
+    rich_text_doc = True
 
 
 class StartInventoryPool(StartInventory):
     """Start with these items and don't place them in the world.
-    The game decides what the replacement items will be."""
+
+    The game decides what the replacement items will be.
+    """
     verify_item_name = True
     display_name = "Start Inventory from Pool"
+    rich_text_doc = True
 
 
 class StartHints(ItemSet):
-    """Start with these item's locations prefilled into the !hint command."""
+    """Start with these item's locations prefilled into the ``!hint`` command."""
     display_name = "Start Hints"
+    rich_text_doc = True
 
 
 class LocationSet(OptionSet):
@@ -1242,28 +1270,33 @@ class LocationSet(OptionSet):
 
 
 class StartLocationHints(LocationSet):
-    """Start with these locations and their item prefilled into the !hint command"""
+    """Start with these locations and their item prefilled into the ``!hint`` command."""
     display_name = "Start Location Hints"
+    rich_text_doc = True
 
 
 class ExcludeLocations(LocationSet):
-    """Prevent these locations from having an important item"""
+    """Prevent these locations from having an important item."""
     display_name = "Excluded Locations"
+    rich_text_doc = True
 
 
 class PriorityLocations(LocationSet):
-    """Prevent these locations from having an unimportant item"""
+    """Prevent these locations from having an unimportant item."""
     display_name = "Priority Locations"
+    rich_text_doc = True
 
 
 class DeathLink(Toggle):
     """When you die, everyone dies. Of course the reverse is true too."""
     display_name = "Death Link"
+    rich_text_doc = True
 
 
 class ItemLinks(OptionList):
     """Share part of your item pool with other players."""
     display_name = "Item Links"
+    rich_text_doc = True
     default = []
     schema = Schema([
         {
@@ -1330,6 +1363,7 @@ class ItemLinks(OptionList):
 
 class Removed(FreeText):
     """This Option has been Removed."""
+    rich_text_doc = True
     default = ""
     visibility = Visibility.none