Add license header

[pem70]

What It Does
Adds license header for files and updates workflow with auto check and addition for license headers. [#293]

How to Test

Review Checklist
I certify that I have:

• tested my changes
• added/updated automated tests
• updated the changelog
• followed the contribution guidelines

Additional Comments

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.90%. Comparing base (307ec04) to head (43511a5).
Report is 68 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #318   +/-   ##
=======================================
  Coverage   89.90%   89.90%           
=======================================
  Files          53       53           
  Lines        2813     2813           
=======================================
  Hits         2529     2529           
  Misses        284      284           

Flag	Coverage Δ
unittests	89.90% <100.00%> (ø)

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[t1m0thyj]

Looks pretty good, thanks @pem70! Left a few comments

[traeok]

Thanks for addressing the missing licenses and for adding the script @pem70!
I left a couple comments; one is regarding the script and the other is about a duplicate license header.

[traeok]

LGTM, thanks @pem70!

It might be helpful to print the failing files even when the script isn't in "write mode," so that you can see which files have failed the check in the CI output. That said, not requesting changes for this - just a suggestion 😋

[t1m0thyj]

LGTM, thanks @pem70!

[github-actions]

Release succeeded for the main branch. 🎉

The following packages have been published:

• pypi: zowe-python-sdk-bundle-1.0.0.dev19
• pypi: zowe_core_for_zowe_sdk-1.0.0.dev19
• pypi: zowe_zos_console_for_zowe_sdk-1.0.0.dev19
• pypi: zowe_zos_files_for_zowe_sdk-1.0.0.dev19
• pypi: zowe_zos_jobs_for_zowe_sdk-1.0.0.dev19
• pypi: zowe_zos_tso_for_zowe_sdk-1.0.0.dev19
• pypi: zowe_zosmf_for_zowe_sdk-1.0.0.dev19

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