Core: some typing and docs in various parts of the interface (#1060)

* some typing and docs in various parts of the interface

* fix whitespace in docstring

Co-authored-by: black-sliver <59490463+black-sliver@users.noreply.github.com>

* suggested changes from discussion

* remove redundant import

* adjust type for json messages

* for options module detection:
 module.lower().endswith("options")

Co-authored-by: black-sliver <59490463+black-sliver@users.noreply.github.com>

NetUtils.py

@@ -100,7 +100,7 @@ _encode = JSONEncoder(
 ).encode
 
 
-def encode(obj):
+def encode(obj: typing.Any) -> str:
     return _encode(_scan_for_TypedTuples(obj))