First pass at supporting user apps

Co-authored-by: red <red@kalab.sk>
Co-authored-by: Vioshim <63890837+Vioshim@users.noreply.github.com>

discord/app_commands/tree.py

@@ -58,6 +58,7 @@ from .errors import (
     CommandSyncFailure,
     MissingApplicationID,
 )
+from .installs import AppCommandContext, AppInstallationType
 from .translator import Translator, locale_str
 from ..errors import ClientException, HTTPException
 from ..enums import AppCommandType, InteractionType
@@ -121,9 +122,26 @@ class CommandTree(Generic[ClientT]):
         to find the guild-specific ``/ping`` command it will fall back to the global ``/ping`` command.
         This has the potential to raise more :exc:`~discord.app_commands.CommandSignatureMismatch` errors
         than usual. Defaults to ``True``.
+    allowed_contexts: :class:`~discord.app_commands.AppCommandContext`
+        The default allowed contexts that applies to all commands in this tree.
+        Note that you can override this on a per command basis.
+
+        .. versionadded:: 2.4
+    allowed_installs: :class:`~discord.app_commands.AppInstallationType`
+        The default allowed install locations that apply to all commands in this tree.
+        Note that you can override this on a per command basis.
+
+        .. versionadded:: 2.4
     """
 
-    def __init__(self, client: ClientT, *, fallback_to_global: bool = True):
+    def __init__(
+        self,
+        client: ClientT,
+        *,
+        fallback_to_global: bool = True,
+        allowed_contexts: AppCommandContext = MISSING,
+        allowed_installs: AppInstallationType = MISSING,
+    ):
         self.client: ClientT = client
         self._http = client.http
         self._state = client._connection
@@ -133,6 +151,8 @@ class CommandTree(Generic[ClientT]):
 
         self._state._command_tree = self
         self.fallback_to_global: bool = fallback_to_global
+        self.allowed_contexts = AppCommandContext() if allowed_contexts is MISSING else allowed_contexts
+        self.allowed_installs = AppInstallationType() if allowed_installs is MISSING else allowed_installs
         self._guild_commands: Dict[int, Dict[str, Union[Command, Group]]] = {}
         self._global_commands: Dict[str, Union[Command, Group]] = {}
         # (name, guild_id, command_type): Command
@@ -722,7 +742,7 @@ class CommandTree(Generic[ClientT]):
         else:
             guild_id = None if guild is None else guild.id
             value = type.value
-            for ((_, g, t), command) in self._context_menus.items():
+            for (_, g, t), command in self._context_menus.items():
                 if g == guild_id and t == value:
                     yield command
 
@@ -1058,9 +1078,9 @@ class CommandTree(Generic[ClientT]):
 
         translator = self.translator
         if translator:
-            payload = [await command.get_translated_payload(translator) for command in commands]
+            payload = [await command.get_translated_payload(self, translator) for command in commands]
         else:
-            payload = [command.to_dict() for command in commands]
+            payload = [command.to_dict(self) for command in commands]
 
         try:
             if guild is None: