chore: add theme_preference column to users table (#11069)

coderd/database/migrations/000175_add_user_theme_preference.down.sql

@@ -0,0 +1 @@
+ALTER TABLE users DROP COLUMN "theme_preference";

coderd/database/migrations/000175_add_user_theme_preference.up.sql

@@ -0,0 +1,3 @@
+ALTER TABLE users ADD COLUMN "theme_preference" text NOT NULL DEFAULT '';
+
+COMMENT ON COLUMN "users"."theme_preference" IS '"" can be interpreted as "the user does not care", falling back to the default theme';

coderd/database/migrations/create_migration.sh

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 
 # Usage:
-# ./create_migration name of migration
-# ./create_migration "name of migration"
-# ./create_migration name_of_migration
+# ./create_migration.sh name of migration
+# ./create_migration.sh "name of migration"
+# ./create_migration.sh name_of_migration
 
 set -euo pipefail
 
@@ -27,7 +27,7 @@ CREATE TYPE new_logintype AS ENUM (
 
 ALTER TABLE users
 	ALTER COLUMN login_type DROP DEFAULT, -- if the column has a default, it must be dropped first
-	ALTER COLUMN login_type TYPE new_logintype USING (login_type::text::new_logintype), -- converts the old enum until the new enum using text as an intermediary
+	ALTER COLUMN login_type TYPE new_logintype USING (login_type::text::new_logintype), -- converts the old enum into the new enum using text as an intermediary
 	ALTER COLUMN login_type SET DEFAULT 'password'::new_logintype; -- re-add the default using the new enum
 
 DROP TYPE login_type;