lima-kilo: introduce chroot
This patch introduces a new directory tree to host all fake lima-kilo files.
The base directory is "$HOME/.local/toolforge-lima-kilo". It will be host of lima-kilo stuff such as:
- userconfig.yaml (to override lima-kilo configuration)
- chroot/ (to host all fake toolforge directory structure and other files)
- kind.yaml (to configure kind)
- other stuff in the future
Note the change to the user configuration file.
Bug: T326789 Signed-off-by: Arturo Borrero Gonzalez aborrero@wikimedia.org