feat: Add per AZ tags support for NAT Gateway, NAT EIP and private route table

[aayushsrivastava]

Description

Adds the ability to customize the tags for an individual NAT Gateway, NAT EIP, or private route table.

Motivation and Context

The components can have multiple instances in different AZs.

We are trying to import some existing VPC resources into Terraform. These resources have some tags that differ in value between AZs, and would like the Terraform module to be able to accomodate them.

Breaking Changes

No breaking changes

How Has This Been Tested?

• I have updated at least one of the examples/* to demonstrate and validate my change(s)
• I have tested and validated these changes using one or more of the provided examples/* projects
• I have tested and validated these changes on an internal Terraform configuration at our company.

• I have executed pre-commit run -a on my pull request

[github-actions]

This PR has been automatically marked as stale because it has been open 30 days
with no activity. Remove stale label or comment or this PR will be closed in 10 days

[bryantbiggs]

thank you but this is not something we are going to accept at this time - tags should be standardized across resources and not so many unique/snowflake tags

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues. If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.