Refactor CAPZ codebase to reenabled kubebuilder

[nawazkh]

/kind cleanup

What needs cleanup:
[A clear and concise description of what needs to be cleaned up.]

• Refactor CAPZ code to reenable kubebuilder.

Describe the solution you'd like

• Following the mini experiment at Update PROJECT file #5390 (comment), we should probe to restore kubebuilder <command> functionality in CAPZ.
• If not restore, document the reason for moving away from Kubebuilder.
• If not moved away, we should try refactoring CAPZ code to leverage kubebuilder. I was not able to generate a new API in CAPZ (kubebuilder create api) without manual refactoring of CAPZ code.

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]