feat: add support for Elasticache global replication group

[apavamontri]

Description of your changes

Fixes #1333. Implementing aws_elasticache_global_replication_group

I have:

• Read and followed Crossplane's contribution process.
• 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

Running Uptest locally.

--- PASS: kuttl (1826.27s)
    --- PASS: kuttl/harness (0.00s)
        --- PASS: kuttl/harness/case (1825.48s)
PASS
15:24:48 [ OK ] running automated tests

Also testing the following cluster setup:

• auth_token: reading from Kubernetes secret
• multi-az, failover, number of clusters > 1
• in-transit encryption

Timeout need to increase to 1 hour due the at least two clusters creation using uptest.upbound.io/timeout: "3600" annotation.

[turkenf]

/test-examples="examples/elasticache/v1beta1/globalreplicationgroup.yaml"

[turkenf]

Thank you for this dedicated PR @apavamontri. I left two small comments.

Could you please squash your commits to make the commit history cleaner?

[turkenf]

And please sign your commits: https://github.com/crossplane-contrib/provider-upjet-aws/pull/1485/checks?check_run_id=29807125527

[apavamontri]

Thank you for this dedicated PR @apavamontri. I left two small comments.

Could you please squash your commits to make the commit history cleaner?

Rebased and squashed. Thank you for your patient.

[apavamontri]

And please sign your commits: https://github.com/crossplane-contrib/provider-upjet-aws/pull/1485/checks?check_run_id=29807125527

@turkenf, It was my mistake. Add --signoff during rebased and squashed. Thank you for your patience and for helping out during this process

[turkenf]

/test-examples="examples/elasticache/v1beta1/globalreplicationgroup.yaml"

https://github.com/crossplane-contrib/provider-upjet-aws/actions/runs/10797996747

[turkenf]

Thanks a lot @apavamontri, LGTM 🙌