Add workflow regeneration to spin (#167551)

Pull Request resolved: https://github.com/pytorch/pytorch/pull/167551
Approved by: https://github.com/Skylion007, https://github.com/albanD, https://github.com/atalman
ghstack dependencies: #167227

.spin/cmds.py

@@ -328,3 +328,10 @@ def quicklint(ctx, apply_patches, **kwargs):
 def quickfix(ctx, **kwargs):
     """Autofix changed files."""
     ctx.invoke(quicklint, apply_patches=True)
+
+
+@click.command()
+def regenerate_github_workflows():
+    """Regenerate GitHub workflows from templates."""
+    cmd = [sys.executable, "scripts/generate_ci_workflows.py"]
+    spin.util.run(cmd, cwd="./.github")

CONTRIBUTING.md

@@ -317,6 +317,7 @@ With Spin, we offer a unified interface to these tasks.
 |`regenerate-version`|regenerate `torch/version.py`|
 |`regenerate-type-stubs`|regenerates type stubs for use by static type checkers|
 |`regenerate-clangtidy-files`|regenerates clang related files needed for linting|
+|`regenerate-github-workflows`|regenerates github workflows from jinja templates|
 
 ## Unit testing
 

pyproject.toml

@@ -391,4 +391,5 @@ package = 'torch'
   ".spin/cmds.py:regenerate_version",
   ".spin/cmds.py:regenerate_type_stubs",
   ".spin/cmds.py:regenerate_clangtidy_files",
+  ".spin/cmds.py:regenerate_github_workflows",
 ]