Core: Add "OptionCounter", use it for generic "StartInventory" and Witness "TrapWeights" (#3756)

* CounterOption

* bring back the negative exception for ItemDict

* Backwards compatibility

* ruff on witness

* fix in calls

* move the contains

* comment

* comment

* Add option min and max values for CounterOption

* Use min 0 for TrapWeights

* This is safe now

* ruff

* This fits on one line again now

* OptionCounter

* Update Options.py

* Couple more typing things

* Update Options.py

* Make StartInventory work again, also make LocationCounter theoretically work

* Docs

* more forceful wording

* forced line break

* Fix unit test (that wasn't breaking?)

* Add trapweights to witness option presets to 'prove' that the unit test passes

* Make it so you can order stuff

* Update macros.html

WebHostLib/templates/weightedOptions/macros.html

@@ -113,9 +113,18 @@
     {{ TextChoice(option_name, option) }}
 {% endmacro %}
 
-{% macro ItemDict(option_name, option, world) %}
+{% macro OptionCounter(option_name, option, world) %}
+    {% set relevant_keys = option.valid_keys %}
+    {% if not relevant_keys %}
+        {% if option.verify_item_name %}
+            {% set relevant_keys = world.item_names %}
+        {% elif option.verify_location_name %}
+            {% set relevant_keys = world.location_names %}
+        {% endif %}
+    {% endif %}
+
     <div class="dict-container">
-        {% for item_name in (option.valid_keys|sort if (option.valid_keys|length > 0) else world.item_names|sort) %}
+        {% for item_name in (relevant_keys if relevant_keys is ordered else relevant_keys|sort) %}
             <div class="dict-entry">
                 <label for="{{ option_name }}-{{ item_name }}-qty">{{ item_name }}</label>
                 <input