Add database schema and Kysely packages

- Create initial database migration with full auth schema:
  - users, sessions, passkeys, devices tables
  - orgs, org_members, org_sites, org_invites tables
  - email_verifications, password_resets, login_requests tables
  - Indexes for common lookups and cleanup jobs
- Add @reviq/db-schema package with kysely-codegen
- Add @reviq/db package with Kysely client

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

packages/db-schema/package.json

@@ -0,0 +1,26 @@
+{
+  "name": "@reviq/db-schema",
+  "version": "0.0.1",
+  "private": true,
+  "type": "module",
+  "exports": {
+    ".": "./src/index.ts"
+  },
+  "scripts": {
+    "build": "tsc",
+    "clean": "tsc --build --clean && rm -rf dist/ node_modules/ .eslintcache",
+    "lint": "eslint . --cache",
+    "generate": "kysely-codegen --dialect postgres --url $DATABASE_URL --out-file src/types.ts"
+  },
+  "dependencies": {
+    "kysely": "^0.28.9",
+    "pg": "^8.13.1"
+  },
+  "devDependencies": {
+    "kysely-codegen": "^0.19.0",
+    "@types/node": "^25.0.3",
+    "@types/pg": "^8.11.10",
+    "@macalinao/tsconfig": "catalog:",
+    "typescript": "catalog:"
+  }
+}