General Upgrades and Housekeeping for Terraform bootstrap

[edgarsilva948]

What does this PR do?

• Eliminates the eks blueprints addon module, directly linking to it.
• Removes the variables file to align with EKS Blueprints best practices.
• Upgrades all related blueprint modules including IRSA, EKS, and Addons.
• Upgrades Crossplane to enable new metrics.
• Revises Helm values for consistent naming and organization.
• Replaces the Crossplane grafana dashboard and adds an ArgoCD dashboard.
• Replaces the outdated gavinbunney/kubectl.
• Transforms the cleanup process from a script to documentation.

Motivation

The motivation behind this pull request is to enhance maintainability, and ensure that our Blueprints adhere to the latest best practices.

More

• [x] Yes, I have tested the PR using my local account setup (Please refer to the Additional Notes for test evidence).
• [ ] Yes, I have added a new example under examples to support my PR.
• [x] Yes, I have updated the docs for this feature.
• [x] Yes, I have linked to an issue or feature request (applicable to PRs that solve a bug or a feature request).

Note:

• Not all PRs require examples and docs.
• We prefer small, well-tested pull requests. Please ensure your pull requests are self-contained, and commits are squashed.

For Moderators

• [ ] E2E Test successfully complete before merge?

Additional Notes

N/A

[edgarsilva948]

this PR fixes #166

[edgarsilva948]

@candonov adjusted it with your recommendations