feat(slash): gossip SLASH_COMMAND_DELETE handler

Emit and receive slash command removal events on the guild mesh.

Co-authored-by: Cursor <[email protected]>

index.js

@@ -350,6 +350,9 @@ class PearcordGuild extends EventEmitter {
     if (method === RPC.SLASH_COMMAND_UPSERT) {
       this.emit('slash-command', payload)
     }
+    if (method === RPC.SLASH_COMMAND_DELETE) {
+      this.emit('slash-command-delete', payload)
+    }
     if (method === RPC.EMOJI_UPSERT) {
       this.emit('guild-emoji', payload)
     }
@@ -706,6 +709,10 @@ class PearcordGuild extends EventEmitter {
     broadcastGossip(this, RPC.SLASH_COMMAND_UPSERT, row)
   }
 
+  gossipSlashCommandDelete (payload) {
+    broadcastGossip(this, RPC.SLASH_COMMAND_DELETE, payload)
+  }
+
   gossipEmojiUpsert (row) {
     broadcastGossip(this, RPC.EMOJI_UPSERT, row)
   }