Add options to improve handling of webhook messages sent by other bridges

example-config.yaml

@@ -85,6 +85,7 @@ bridge:
     #   .Discriminator - The 4 numbers after the name on Discord
     #   .Bot - Whether the user is a bot
     #   .System - Whether the user is an official system user
+    #   .Webhook - Whether the user is a webhook
     displayname_template: '{{or .GlobalName .Username}}{{if .Bot}} (bot){{end}}'
     # Displayname template for Discord channels (bridged as rooms, or spaces when type=4).
     # Available variables:
@@ -146,6 +147,11 @@ bridge:
     # Whether or not created rooms should have federation enabled.
     # If false, created portal rooms will never be federated.
     federate_rooms: true
+    # Prefix messages from webhooks with the profile info? This can be used along with a custom displayname_template
+    # to better handle webhooks that change their name all the time (like ones used by bridges).
+    prefix_webhook_messages: false
+    # Bridge webhook avatars?
+    enable_webhook_avatars: true
     # Should the bridge upload media to the Discord CDN directly before sending the message when using a user token,
     # like the official client does? The other option is sending the media in the message send request as a form part
     # (which is always used by bots and webhooks).