Move modlogset/bankset commands to core (#4486)

* Move bankset and modlogset to core commands

* Move prune over too

* Finish moving prune

* Move [p]economyset registeramount to [p]bankset registeramount

* style fix

* Fix circular import issue with another breaking change

* Apparently I missed a conflict and git still let me commit...

* Really git?

* Rename RawUserIds -> RawUserIdConverter, improve documentation

* Improve documentation of `is_owner_if_bank_global()`

* MENTION_REGEX -> USER_MENTION_REGEX

* Add 'bank.' prefix

* Fix command examples in docstrings

* Missing docstring change from `bankset prune`

* Missing changes for commands in modlogset

* Update docs

* Remove duplicated info in `economyset showsettings`

* Fix toctree in index.rst

* Add command group prefixes to names of functions for bankset/modlogset

* Remaining string updates due to command name changes

* Ensure that the bank folder is actually gone

Co-authored-by: palmtree5 <palmtree5+3577255@users.noreply.github.com>
Co-authored-by: jack1142 <6032823+jack1142@users.noreply.github.com>

redbot/core/commands/converter.py

@@ -34,6 +34,7 @@ if TYPE_CHECKING:
     from .context import Context
 
 __all__ = [
+    "RawUserIdConverter",
     "DictConverter",
     "UserInputOptional",
     "NoParseOptional",
@@ -51,6 +52,7 @@ __all__ = [
 _ = Translator("commands.converter", __file__)
 
 ID_REGEX = re.compile(r"([0-9]{15,20})")
+USER_MENTION_REGEX = re.compile(r"<@!?([0-9]{15,21})>$")
 
 
 # Taken with permission from
@@ -204,6 +206,32 @@ def parse_relativedelta(
     return None
 
 
+class RawUserIdConverter(dpy_commands.Converter):
+    """
+    Converts ID or user mention to an `int`.
+
+    Useful for commands like ``[p]ban`` or ``[p]unban`` where the bot is not necessarily
+    going to share any servers with the user that a moderator wants to ban/unban.
+
+    This converter doesn't check if the ID/mention points to an actual user
+    but it won't match IDs and mentions that couldn't possibly be valid.
+
+    For example, the converter will not match on "123" because the number doesn't have
+    enough digits to be valid ID but, it will match on "12345678901234567" even though
+    there is no user with such ID.
+    """
+
+    async def convert(self, ctx: "Context", argument: str) -> int:
+        # This is for the hackban and unban commands, where we receive IDs that
+        # are most likely not in the guild.
+        # Mentions are supported, but most likely won't ever be in cache.
+
+        if match := ID_REGEX.match(argument) or USER_MENTION_REGEX.match(argument):
+            return int(match.group(1))
+
+        raise BadArgument(_("'{input}' doesn't look like a valid user ID.").format(input=argument))
+
+
 # Below this line are a lot of lies for mypy about things that *end up* correct when
 # These are used for command conversion purposes. Please refer to the portion
 # which is *not* for type checking for the actual implementation