major changes:
* Working with API service to provision and monitor jobs
* updated Nuclio runtime to support same semantics as other runtimes
* updated Nuclio-serving (Nuclio+KFServing) to latest version of KFServing
* Initial support for SQL DB
* Initial UI version
* Function lifecycle management (build, save, load, ..)
* support remote build and job submission (via API service)
* improved stability and bug fixes