add github actions, fix go shadowing issues

[vigo]

- add shellcheck github action
- add go test github action
- add golangci linte github action
- fix bash script shebang and file extension

Description

Resolve golang lint issues

How Has This Been Tested?

just called go tests :) please run it locally before merge.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas (unused test code)
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules