add delete plugin

stdplugins/kbass_delete.py

@@ -0,0 +1,15 @@
+"""
+Reply to a message with .d <n> to delete <n> messages from that point
+(negative values of <n> go backwards in history)
+"""
+import asyncio
+
+from stdplugins.kbass_core import self_reply_selector
+
+
+@self_reply_selector(borg, r'\.d')
+async def on_save(event, targets, num_offset):
+    await borg.delete_messages(
+        await event.get_input_chat(),
+        targets
+    )