Support package refactor

[Fiona-Waters]

Issue link

project-codeflare/codeflare-operator#237

What changes have been made

• Moved the support files from the Codeflare Operator Repo to this new separate repo for common functions.
• Added Makefile and moved verify-imports.sh in order to be able to verify imports are correct.

Questions:

• Do we want to group the files further within the support directory?
• We should have an OWNERS file - Who should be added as approvers and reviewers?
• Do we want to add PR checks for this repo now?

Verification Steps

• Once the Codeflare Operator repo is updated to reflect these changes we can verify that everything works as expected.

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

[ChristianZaccaria]

/lgtm /approve

[astefanutti]

We should bring the corresponding GH actions workflows there too.

[Fiona-Waters]

verify_generated_files workflow added.