Create Knative-with-GKE.md

[Srish-ty]

"Fixes tektoncd/operator#1914 #1914 or "Added Knative-with-GKE.md file which was deleted"

Proposed Changes

• Adds Knative-with-GKE.md file
• resolves Link broken on tektoncd/operator/blob/main/DEVELOPMENT.md tektoncd/operator#1914 issue
• redirects to the right md file, as the disappeared file is now created

[linux-foundation-easycla]

• ✅login: Srish-ty / (bc642a5)

The committers listed above are authorized under a signed CLA.

[knative-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[knative-prow]

Welcome @Srish-ty! It looks like this is your first PR to knative/docs 🎉

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[Srish-ty]

This pr resolves issue tektoncd/operator#1914
Please review @matzew , @ReToCode