feat(syncer-service): onboard syncer-service component

[ab-ghosh]

Changes

This PR onboards the syncer-service component into the Tekton Operator with conditional deployment based on TektonConfig scheduler settings.

• Introduces a new SyncerService Custom Resource (CR) to manage the syncer-service component
• Deploys syncer-service conditionally, only when:
  • scheduler.multi-cluster-disabled is set to false
  • scheduler.multi-cluster-role is set to Hub

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[ab-ghosh]

Upgrade test results:

Before the upgrade

After the upgrade

Updating the TektonConfig with the scheduler configuration (multi-cluster-disabled: false and multi-cluster-role: Hub)

Updating the TektonConfig with the scheduler configuration (multi-cluster-disabled: true and multi-cluster-role: "")

[anithapriyanatarajan]

@ab-ghosh - Thanks for sharing the outcome of upgrade tests. Please includes tests to make sure that sync service behaves the expected way in hub and spoke cluster. Check the possibility incorporating tests in the following one atleast for each type : locations: https://github.com/tektoncd/operator/tree/main/test

Also see the possibility of incorporating unit tests.

[jkhelil]

add unit test

[ab-ghosh]

/kind feature