refactor(infra): directory structure (#4615)

.prettierignore

@@ -2,16 +2,16 @@ yarn.lock
 target
 lib
 test-results
-packages/i18n/src/i18n-generated.ts
-packages/graphql/src/graphql/index.ts
 .next
 out
 dist
 .yarn
-tests/affine-legacy/**/static
 .github/helm
 _next
 storybook-static
 web-static
 public
-apps/server/src/schema.gql
+packages/backend/server/src/schema.gql
+packages/frontend/i18n/src/i18n-generated.ts
+packages/frontend/graphql/src/graphql/index.ts
+tests/affine-legacy/**/static