Add creation of release_matrix.json to gen_quick_start_module.py

The PyTorch website needs access to the "release matrix" in the same way it can access published_version.json to generate the config needed for the "Start Locally" page.

Author: marco-s

scripts/gen_quick_start_module.py

@@ -83,6 +83,9 @@ def write_published_versions(versions):
     with open(BASE_DIR / "published_versions.json", "w") as outfile:
         json.dump(versions, outfile, indent=2)
 
+def write_release_matrix(matrix):
+    with open(BASE_DIR / "release_matrix.json", "w") as outfile:
+        json.dump(matrix, outfile, indent=2)
 
 def read_matrix_for_os(osys: OperatingSystem, channel: str):
     jsonfile = load_json_from_basedir(f"{osys.value}_{channel}_matrix.json")
@@ -242,6 +245,8 @@ def main():
             for osys in OperatingSystem:
                 release_matrix[val][osys.value] = read_matrix_for_os(osys, val)
 
+        write_release_matrix(release_matrix)
+
         extract_arch_ver_map(release_matrix)
         for val in ("nightly", "release"):
             update_versions(versions, release_matrix[val], val)