Optimization and cleanups

Polished features. Cleanup (#4)

* Multiple fixes

- Added template operation
- Added optional file generation on example
- Added ability to set root path for generation

* Added test sample

* Added append file operation

* Move namespace

* Added ability to add command from definition file

* Added initial working definition file from a YAML file

* Minor cleanup

* Move operations and validators to it's own manager

* Moved inputs to it's own manager

* Delete unnecessary files

* Cleanup

* Example snippet cleanup

* Resolved merge conflicts