Add CI to run EF_UVM test for some IPs

[kareefardi]

Adds a CI that does the following:

1. Takes .github/test_set.yaml as an input:

- name: EF_GPIO8
  url: https://github.com/efabless/EF_GPIO8.git
  tests:
  - gpio8_all_out_test 
  - gpio8_all_in_test

2. Creates a test matrix based on the file above where each entry in the matrix represents a specific test for a specific IP.
3. Clones IPs and run tests. Each entry in the matrix runs in a separate job.

The purpose of this CI is to try and verify if changes in EF_UVM affects exiting tests.

Future Enhancements (for this PR or others):

• Add more IPs and more IP tests.
• Save EF_UVM commit hash and IP commit hash for reproducibility.

Note:

• Please use squash and merge option.