Add runs-on repo config

[lockshaw]

Description of changes:

Add repo config for testing https://runs-on.com/ (has to be on the main branch, hence the early PR for testing).

Related Issues:

Linked Issues:

• Issue #

Issues closed by this PR:

• Closes #

Before merging:

• Did you update the flexflow-third-party repo, if modifying any of the Cmake files, the build configs, or the submodules?

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