Add python3-libgpiod dependency.
As this dependency requiress a rebuild of the python3 environment, add some command line options to the install script:
- "-r" will rebuild the virtualenv
- "-f" will force overwite the defaults file. By default an existing defaults file will not be modified.
- "-c <config_path>" will direct moonraker to use the supplied path for the config file.
Signed-off-by: Eric Callahan <arksine.code@gmail.com>
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