gh-repo: add page (#4897)

pages/common/gh-repo.md

@@ -0,0 +1,20 @@
+# gh repo
+
+> Work with GitHub repositories on the command line.
+> More information: <https://cli.github.com/manual/gh_repo>.
+
+- Create a new repository (if the repository name is not set, the default name will be the name of the current directory):
+
+`gh repo create {{name}}`
+
+- Clone a repository:
+
+`gh repo clone {{owner}}/{{repository}}`
+
+- Fork and clone a repository:
+
+`gh repo fork {{owner}}/{{repository}} --clone`
+
+- View a repository in the web browser:
+
+`gh repo view {{repository}} --web`