Configure EndpointAccess.redshift resource and add example

[turkenf]

Description of your changes

This PR includes configuring the EndpointAccess.redshift resource and adding the example manifest.

I have:

• [x] Read and followed Crossplane's contribution process.
• [x] Run make reviewable to ensure this PR is ready for review.
• [ ] ~Added backport release-x.y labels to auto-backport this PR if necessary.~

How has this code been tested

Uptest run: https://github.com/crossplane-contrib/provider-upjet-aws/actions/runs/9407695171

Manual test results:

[turkenf]

/test-examples="examples/redshift/v1beta1/endpointaccess.yaml"

[turkenf]

/test-examples="examples/redshift/v1beta1/endpointaccess.yaml"

[turkenf]

/test-examples="examples/redshift/v1beta1/endpointaccess.yaml"