feat(server): basic context api (#10056)

fix CLOUD-97
fix CLOUD-98

.prettierignore

@@ -29,6 +29,7 @@ test-results
 tools/cli/src/webpack/error-handler.js
 packages/backend/native/index.d.ts
 packages/backend/server/src/__tests__/__snapshots__
+packages/common/native/fixtures/**
 packages/frontend/native/index.d.ts
 packages/frontend/native/index.js
 packages/frontend/graphql/src/graphql/index.ts