Initial bot functionality

* The bot now properly joins the management room
* The management room is persisted in the database
* Welcome/help messages are sent in the management room

database/migrations/01-initial.sql

@@ -1,11 +1,32 @@
 CREATE TABLE IF NOT EXISTS portal (
-	did      text,
-	receiver text,
-	mxid     text UNIQUE,
+	id       TEXT,
+	receiver TEXT,
+	mxid     TEXT UNIQUE,
 
-	name   text NOT NULL,
-	topic  text NOT NULL,
-	avatar text NOT NULL,
+	name   TEXT NOT NULL,
+	topic  TEXT NOT NULL,
 
-	PRIMARY KEY (did, receiver)
+	avatar     TEXT NOT NULL,
+	avatar_url TEXT NOT NULL,
+
+	PRIMARY KEY (id, receiver)
+);
+
+CREATE TABLE IF NOT EXISTS puppet (
+	id          TEXT PRIMARY KEY,
+	displayname TEXT,
+
+	avatar     TEXT,
+	avatar_url TEXT,
+
+	enable_presence BOOLEAN NOT NULL DEFAULT true
+);
+
+CREATE TABLE IF NOT EXISTS user (
+	mxid TEXT PRIMARY KEY,
+	id   TEXT UNIQUE,
+
+	management_room TEXT,
+
+	token TEXT
 );