Move pages under tldr, lint run.sh, update docs

tldr/glab-alias

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# glab alias
+
+> Manage GitLab CLI command aliases.
+> More information: <https://glab.readthedocs.io/en/latest/alias>.
+
+- Display the subcommand help:
+
+`glab alias`
+
+- List all the aliases `glab` is configured to use:
+
+`glab alias list`
+
+- Create a `glab` subcommand alias:
+
+`glab alias set {{mrv}} '{{mr view}}'`
+
+- Set a shell command as a `glab` subcommand:
+
+`glab alias set --shell {{alias_name}} {{command}}`
+
+- Delete a command shortcut:
+
+`glab alias delete {{alias_name}}`