[FEATURE] Robot Framework test case support

[kjczarne]

Is your feature request related to a problem? Please describe.
Kalash could fairly easily provide a 1-layer-over support for robot API calls and could thus be used to trigger Robot Test Cases in a dynamic suite context, a feature painfully lacking from the Robot Framework Test Case definition.

Describe the solution you'd like

• Kalash is able to collect *.robot test suite files.
• Metadata extension is added to the *.robot test suite files - should be fully optional but useful for filtering.

Describe alternatives you've considered
Using Robot directly is nice but creating test suites dynamically based on some filtering parameters can save a lot of repetitiveness in code.

Additional context
N/A

[kjczarne]

We may not be able to hit that one by 5.0 but 5.1 should be reachable.