Alper/async checkout

[jedwards4b]

Merge Alpers PR #70 to master to fix github testing.

[Copilot]

Pull Request Overview

This PR merges Alper’s changes to convert submodule updates to asynchronous operations in order to fix GitHub testing issues.

• Introduces asyncio for concurrent submodule updates.
• Updates the submodules_update function (and its recursive calls) to be asynchronous, using asyncio.to_thread for blocking operations and asyncio.gather for task concurrency.
• Modifies the main update action to use asyncio.run for invoking the new asynchronous update flow.

[alperaltuntas]

Thanks, @jedwards4b, but I think this isn't ready yet. While testing, I noticed that when re-running git-fleximod update multiple times, the following if statement evaluates to False for some submodules, unlike in the non-async version. I'm not yet certain if this is a real issue or what the fix might be, but I hope to revisit it soon. In the meantime, feel free to take a look or suggest a fix if you have ideas.

git-fleximod/git_fleximod/submodule.py

Line 400 in 2be5073

if os.path.exists(os.path.join(self.path, ".git")):

[alperaltuntas]

This should be closed in favor of #73