[model-controller] Create ServingEnvironment in MR based on namespace containing ServingRuntime CRs

[lampajr]

Is your feature request related to a problem? Please describe.
First step in sequence diagram is to monitor ServingRuntime CRs and create the corresponding ServingEnvironment instance in the Model Registry, the serving runtime name will be the namespace where the watched ServingRuntime CRs are located.

Describe the solution you'd like
Create a new reconciler in the odh-model-controller monitoring for the ServingRuntime CRs and update the model registry accordingly by creating new ServingEnvironment records if not already existing.

Describe alternatives you've considered
n/a

Additional context
n/a

[dhirajsb]

@lampajr Should the title be changed, since Environments don't map to model serving runtimes, rather to a namespace that contains runtimes?

[lampajr]

@lampajr Should the title be changed, since Environments don't map to model serving runtimes, rather to a namespace that contains runtimes?

You are right, title updated