Add InspectorBackendCommands.ts that is generated based on the API exposed by the web inspector frontend.
Add implementation for the network domain and call events in the http-request module so that inspector frontend could visualize the network requests made by the module
Fix tslint and doc comments
- Use relative imports in place of most of our absolute ones.
- Add "private" ambient modules for modules that we need to import using
an absolute path (e.g. when app/.../test-something.ts needs to import
ui/styling/style-scope)
