xerner/Android repo init and sync

Initialize and sync repos using Androids repo command

Trust Signals

name	description	required	default
manifest_url	Specifies the url or git repo to fetch the manifest from. Used in repo init	no	https://github.com/${{ github.repository_owner }}/manifests
manifest_branch	Specifies what manifest branch to use. Used in repo init	no	${{ github.ref_name }}
manifest_filename	Specifies the name of the manifest file to find. Used in repo init	no	default.xml
username	The username to use when authenticating to the manifest server	no	${{ github.actor }}
password	The password or token to use when authenticating while fetching the manifest and git fetching repositories	yes	—

no outputs