Add sar commands

internal/database/migrations/000004_add_sar_role_type.down.sql

@@ -0,0 +1,14 @@
+BEGIN;
+    CREATE TYPE role_type_new AS ENUM (
+        'normal',
+        'moderator',
+        'admin',
+        'patreon',
+    );
+    UPDATE roles SET role_type = 'normal' WHERE role_type = 'sar';
+    ALTER TABLE roles 
+        ALTER COLUMN roles TYPE role_type_new;
+            USING (roles::text::role_type_new)
+    DROP TYPE role_type;
+    ALTER TYPE role_type_new RENAME TO role_type;
+COMMIT;

internal/database/migrations/000004_add_sar_role_type.up.sql

@@ -0,0 +1 @@
+ALTER TYPE role_type ADD VALUE 'sar';