[Feature Request] [Resource Gateway] Replace Labels and Annotations in ResourceFilter with LabelSelector

[logicfox]

Is your feature request related to a problem? Please describe.
This is a feature request.
The Resource Filter config in Resource Gateways currently supports Labels and Annotations, but these filters require specifying a value. Enhancing this with the Label Selector would allow for more fine grained definition of selectors.

Describe the solution you'd like
Replace Labels and Annotations in ResourceFilter with LabelSelector or have it in addition to the current options.

Describe alternatives you've considered
No alternatives available

Additional context
I have a case where I want to execute a workflow if a certain label exists in a Namespace. The value for this label differs. With the current set of options, I have to have multiple configuration blocks for each label value.

This would also imply that there would be lesser code to maintain.

[VaibhavPage]

Cool, I'll add it.