feature(database): add user credential schema

apps/timer/server/database/schema.ts

@@ -1,5 +1,6 @@
 export { sessions } from './session';
 export { users } from './user';
+export { userCredentials } from './user-credential';
 
 export { times } from './time';
 export { projects } from './project';

apps/timer/server/database/user-credential.ts

@@ -0,0 +1,26 @@
+import {
+  boolean,
+  integer,
+  json,
+  pgTable,
+  text,
+  unique,
+  uuid,
+} from 'drizzle-orm/pg-core';
+
+import { users } from './user';
+
+export const userCredentials = pgTable(
+  'user_credential',
+  {
+    id: text('id').notNull().unique(),
+    userId: uuid('user_id')
+      .references(() => users.id, { onDelete: 'cascade' })
+      .notNull(),
+    publicKey: text('public_key').notNull(),
+    counter: integer('counter').notNull(),
+    backedUp: boolean('backed_up').notNull(),
+    transports: json('transports').notNull().$type<object[]>(),
+  },
+  (table) => [unique().on(table.userId, table.id)]
+);