feat(appview): add dialect-specific Drizzle configs and update db scripts

apps/appview/drizzle.sqlite.config.ts

···
+import { defineConfig } from "drizzle-kit";
+
+export default defineConfig({
+  schema: "../../packages/db/src/schema.sqlite.ts",
+  out: "./drizzle-sqlite",
+  dialect: "sqlite",
+  dbCredentials: {
+    url: process.env.DATABASE_URL!,
+  },
+});

apps/appview/package.json

···
     "lint:fix": "oxlint --fix src/",
     "test": "vitest run",
     "clean": "rm -rf dist",
-    "db:generate": "drizzle-kit generate",
-    "db:migrate": "drizzle-kit migrate"
+    "db:generate": "drizzle-kit generate --config=drizzle.postgres.config.ts",
+    "db:migrate": "drizzle-kit migrate  --config=drizzle.postgres.config.ts",
+    "db:generate:sqlite": "drizzle-kit generate --config=drizzle.sqlite.config.ts",
+    "db:migrate:sqlite": "drizzle-kit migrate  --config=drizzle.sqlite.config.ts"
   },
   "dependencies": {
     "@atbb/atproto": "workspace:*",