initial commit, old activity tracker and create-room plugin merged into one with some fun fixes

community/db.py

@@ -0,0 +1,15 @@
+from __future__ import annotations
+
+from mautrix.util.async_db import UpgradeTable, Connection
+
+upgrade_table = UpgradeTable()
+
+@upgrade_table.register(description="Table initialization")
+async def upgrade_v1(conn: Connection) -> None:
+    await conn.execute(
+            """CREATE TABLE user_events (
+                mxid TEXT PRIMARY KEY,
+                last_message_timestamp BIGINT NOT NULL,
+                ignore_inactivity INT
+            )"""
+    )