chore: Add implementation for metrics, update dependency and license description

[cychiang]

Description of your changes

In this PR, it contains:

• Add metrics that supported by crossplane-runtime 1.16
• Update license description
• Update dependency on crossplane-tools to latest version

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