Kiauto

Added
- KiCad environment variables preservation in eeschema_do
- Support for KICAD_CONFIG_HOME defined from inside KiCad
- ERC report name can be configured

Fixed
- No KiCad config assumed, now we ask KiCad

Added
- Support for KiCad 5.99 DRC/ERC reports.

Fixed
- Problems when using KiCad 5.99 and projects from KiCad 5.

Added
- Option to pcbnew_do export:
- `--mirror/-M` Mirror printing (KiCad 6 only!)

Added
- Options to pcbnew_do export:
- `--scaling/-s` Scale factor (0 fit page)
- `--pads/-p` Pads style (0 none, 1 small, 2 full)
- `--no-title/-t` Remove the title-block
- `--monochrome/-m` Print in blanck and white
- `--separate/-S` Layers in separated sheets

Added
- Support for KiCad Nightly
- Just define the environment variable: `KIAUS_USE_NIGHTLY=5.99`

Fixed
- Crash when no arguments.
- Crash when no x11vnc and it was requested.
- Lost warning messages when using --warnings_as_errors