Switch license checker

[xxx7xxxx]

[xxx7xxxx]

Updated. There's a file to be noticed: operator/pkg/api/v1beta1/zz_generated.deepcopy.go is generated by controller-gen, but I still add the license manually.

But the unit test is broken.. How about ignoring the zz files generated by controller-gen?

[codecov-commenter]

Codecov Report

Merging #133 (822143e) into main (08208c7) will increase coverage by 0.01%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #133      +/-   ##
==========================================
+ Coverage   75.97%   75.98%   +0.01%     
==========================================
  Files          77       77              
  Lines        6289     6292       +3     
==========================================
+ Hits         4778     4781       +3     
  Misses       1257     1257              
  Partials      254      254              

Impacted Files	Coverage Δ
emctl/cmd/transformer/generator/visitor.go	82.42% <100.00%> (+0.32%)	:arrow_up:

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 3529da1...822143e. Read the comment docs.

[xxx7xxxx]

Fixed a lot of little issues, please check them out.