feat(make): restructure makefile for ease of use

[tuunit]

Comprehensive Summary of your change

I "stole" a bit of code from the kubebuilder Makefile to have an easier time using make. Furthermore, I took the liberty of restructuring the Makefile a bit. Obviously the copied part is correctly attributed.

Entering make or make help will now yield the following output:

For compatibilities sake I didn't change anything about the logic in the Makefile and only restructured it slightly and added the necessary comments and sections for easier usage.

Please indicate you've done the following:

• Well Written Title and Summary of the PR
• [-] Label the PR as needed. "release-note/ignore-for-release, release-note/new-feature, release-note/update, release-note/enhancement, release-note/community, release-note/breaking-change, release-note/docs, release-note/infra, release-note/deprecation"
• Accepted the DCO. Commits without the DCO will delay acceptance.
• Made sure tests are passing and test coverage is added if needed.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed in website repository.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.30%. Comparing base (c8c11b4) to head (877006b).
Report is 374 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #21452      +/-   ##
==========================================
+ Coverage   45.36%   46.30%   +0.93%     
==========================================
  Files         244      247       +3     
  Lines       13333    13883     +550     
  Branches     2719     2875     +156     
==========================================
+ Hits         6049     6429     +380     
- Misses       6983     7116     +133     
- Partials      301      338      +37     

Flag	Coverage Δ
unittests	46.30% <ø> (+0.93%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

see 491 files with indirect coverage changes

[reasonerjt]

@tuunit
Thanks for the PR, we have some downstream repo that has the dependency on this Makefile so we need some time to double check to evaluate the impact of this chagne.

@wy65701436
Let's see if this aligns with our plan to update the flow.

[tuunit]

@tuunit
Thanks for the PR, we have some downstream repo that has the dependency on this Makefile so we need some time to double check to evaluate the impact of this chagne.

@wy65701436
Let's see if this aligns with our plan to update the flow.

I hope and I'm quite certain I didn't introduce any actual change besides visually for a human to interact with the Makefile but obviously my statement shouldn't be trusted blindly.