feat: shard tenant topic and membership tables

server/internal/logic/sys/im_tenant_tables.go

@@ -59,6 +59,10 @@ func provisionTenantMessageTables(ctx context.Context, tenantID int64) error {
 	baseTables := [][2]string{
 		{prefix + "friendships", "im_friendships"},
 		{prefix + "messages", "im_messages"},
+		{prefix + "topics", "im_topics"},
+		{prefix + "group_members", "im_group_members"},
+		{prefix + "subscriptions", "im_subscriptions"},
+		{prefix + "system_notifications", "im_system_notifications"},
 	}
 	for _, pair := range baseTables {
 		if _, err = db.Exec(ctx, fmt.Sprintf("CREATE TABLE IF NOT EXISTS `%s` LIKE `%s`", pair[0], pair[1])); err != nil {