gh-cache: add page (#18337)

Signed-off-by: Emmanuel Ferdman <emmanuelferdman@gmail.com>

pages/common/gh-cache.md

@@ -0,0 +1,36 @@
+# gh cache
+
+> Manage GitHub Actions caches.
+> More information: <https://cli.github.com/manual/gh_cache>.
+
+- List caches for the current repository:
+
+`gh cache {{[ls|list]}}`
+
+- List caches for a specific repository:
+
+`gh cache {{[ls|list]}} {{[-R|--repo]}} {{owner}}/{{repository}}`
+
+- List caches with a specific cache key prefix:
+
+`gh cache {{[ls|list]}} {{[-k|--key]}} {{key_prefix}}`
+
+- List caches for a specific branch:
+
+`gh cache {{[ls|list]}} {{[-r|--ref]}} refs/heads/{{branch_name}}`
+
+- List caches sorted by least recently accessed:
+
+`gh cache {{[ls|list]}} {{[-S|--sort]}} last_accessed_at {{[-O|--order]}} asc`
+
+- Delete a cache by id:
+
+`gh cache delete {{cache_id}}`
+
+- Delete a cache by key:
+
+`gh cache delete {{cache_key}}`
+
+- Delete all caches:
+
+`gh cache delete {{[-a|--all]}}`