[FEATURE] Allow a different output location to be set for panelize:create_preview

[oliv3r]

The panelize option for kikit works quite nice, and the create_preview option is pretty awesome.

However, when creating panels with the following config:

kibot:
  version: 1

import:
  - file: 'kici_common.kibot.yaml'

outputs:
  - name: 'panelize'
    run_by_default: @RUN_BY_DEFAULT@
    comment: 'Creates a panel to fabricate various copies of the PCB at once.'
    type: 'panelize'
    dir: 'outputs/panels'
    options:
      configs: @PANELIZE_CONFIG_JSON@
      create_preview: true

...
definitions:
  PANELIZE_CONFIG_JSON: 'kikit_panelize.json'
  RUN_BY_DEFAULT: true

the dir parameter nicely sets the output location of the kicad panel project, but the preview is not preferred to be stored there as well. Currently create_preview takes a boolean; maybe we can also accept a string to set a different dir location, could be relative to dir; e.g. create_preview: '../png/' for example.

[set-soft]

Hi @oliv3r, did you try using copy_files output?
I won't allow a string there, this is nice for the YAML, but quite confusing for the GUI.

[oliv3r]

Hmm, I know about copy files, but I'd want to 'move_files'; You do already have other situations where you allow ([boolean, string, list[strings]]) for different items?

[set-soft]

Hmm, I know about copy files, but I'd want to 'move_files';

So perhaps we need to add some option to do a move in the copy output ...

You do already have other situations where you allow ([boolean, string, list[strings]]) for different items?

And you'll realize how annoying is this as soon as you try the (already available) GUI ...

[oliv3r]

GUI? No lol I only use kibot in CI/CD :D so not aware of these 'problems'.

Alternativily, using preview_output: /path (or output as indented from create_preview which is also done for other options ...