Add allow-takeover-from annotation to enable automated VPC Lattice service takeover between clusters

[SinghVikram97]

What type of PR is this?
feature

Which issue does this PR fix:
#724

What does this PR do / Why do we need it:
This PR adds application-networking.k8s.aws/allow-takeover-from annotation to HTTPRoute/GRPCRoute/TLSRoute. When the annotation value matches the existing service's ManagedBy tag, the controller automatically:

• Takes over the VPC Lattice service
• Updates ManagedBy tags on service, associations, listeners, and rules
• Replaces existing rules with new target groups from the Route

Testing done on this change:

Added e2e-tests and unit tests.

Will this PR introduce any new dependencies?:

No

Will this break upgrades or downgrades. Has updating a running cluster been tested?:
No

Does this PR introduce any user-facing change?:

Added support for VPC Lattice service takeover during blue/green cluster migrations via the application-networking.k8s.aws/allow-takeover-from annotation. 

Do all end-to-end tests successfully pass when running make e2e-test?:

Yes, all existing and new tests pass.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.