Preparing the support for harness specific API router + http handler, which allows us to have complete control over the rest api naming and functionality, without having to do complex path rewrites or request / reponse rewrites inline.
This commit contains the following:
- Improve and simplify error handling (remove unnecessary wrappers, make it feel like go)
- Add extra validation for path creation and resource moving (path has to be within same top space, no top space alias allowed)
- Add access logging for rest api and git api
