added get_thread_messages and create_forum_thread endpoints

schema.sql

@@ -51,3 +51,12 @@ CREATE TABLE IF NOT EXISTS "attachments" (
 	FOREIGN KEY ("message_id") REFERENCES "messages"("id")
 	ON UPDATE NO ACTION ON DELETE NO ACTION
 );
+
+CREATE TABLE IF NOT EXISTS "user_forum_owners" (
+	"user_id" INTEGER NOT NULL,
+	"forum_id" INTEGER NOT NULL,
+	FOREIGN KEY ("user_id") REFERENCES "users"("id")
+	ON UPDATE NO ACTION ON DELETE NO ACTION,
+	FOREIGN KEY ("forum_id") REFERENCES "forums"("id")
+	ON UPDATE NO ACTION ON DELETE NO ACTION
+);