[Resolver]: Add Git LFS and clone depth support

[malhotra5]

Fixes #6156

This PR adds support for:

1. Skipping Git LFS files during clone by setting GIT_LFS_SKIP_SMUDGE=1
2. Shallow cloning by setting GIT_CLONE_DEPTH=N where N is the desired depth

The changes:

• Add Git LFS configuration before cloning when GIT_LFS_SKIP_SMUDGE=1 is set
• Add --depth parameter to git clone when GIT_CLONE_DEPTH is set
• Add unit tests to verify both features work correctly

Example workflow file:

env:
  GIT_LFS_SKIP_SMUDGE: '1'
  GIT_CLONE_DEPTH: '1'

---

To run this PR locally, use the following command:

docker run -it --rm   -p 3000:3000   -v /var/run/docker.sock:/var/run/docker.sock   --add-host host.docker.internal:host-gateway   -e SANDBOX_RUNTIME_CONTAINER_IMAGE=docker.all-hands.dev/all-hands-ai/runtime:164fab0-nikolaik   --name openhands-app-164fab0   docker.all-hands.dev/all-hands-ai/openhands:164fab0

[neubig]

@OpenHands please fix the failing tests on this PR

[openhands-ai]

I'm working on a fix! @neubig can track my progress at all-hands.dev