feat: Add Reddit and Twitch named providers (#294)

Adding auth support for future Reddit and Twitch tools.

arcade/arcade/core/auth.py

@@ -96,6 +96,15 @@ class Notion(OAuth2):
         super().__init__(id=id, scopes=scopes)
 
 
+class Reddit(OAuth2):
+    """Marks a tool as requiring Reddit authorization."""
+
+    provider_id: str = "reddit"
+
+    def __init__(self, *, id: Optional[str] = None, scopes: Optional[list[str]] = None):  # noqa: A002
+        super().__init__(id=id, scopes=scopes)
+
+
 class Slack(OAuth2):
     """Marks a tool as requiring Slack (user token) authorization."""
 
@@ -114,6 +123,15 @@ class Spotify(OAuth2):
         super().__init__(id=id, scopes=scopes)
 
 
+class Twitch(OAuth2):
+    """Marks a tool as requiring Twitch authorization."""
+
+    provider_id: str = "twitch"
+
+    def __init__(self, *, id: Optional[str] = None, scopes: Optional[list[str]] = None):  # noqa: A002
+        super().__init__(id=id, scopes=scopes)
+
+
 class X(OAuth2):
     """Marks a tool as requiring X (Twitter) authorization."""
 

arcade/arcade/sdk/auth/__init__.py

@@ -7,9 +7,11 @@ from arcade.core.auth import (
     LinkedIn,
     Notion,
     OAuth2,
+    Reddit,
     Slack,
     Spotify,
     ToolAuthorization,
+    Twitch,
     X,
     Zoom,
 )
@@ -23,9 +25,11 @@ __all__ = [
     "LinkedIn",
     "Notion",
     "OAuth2",
+    "Reddit",
     "Slack",
     "Spotify",
     "ToolAuthorization",
+    "Twitch",
     "X",
     "Zoom",
 ]