update mc-apply.py

[ellensp]

Description

mc-apply.py no longer works with current CONFIG_EXPORT type 1

re wrote almost all of it from scratch so now it works.

Added help and documentation
extended to take a path to the input file on command line, but defaults to still looking for marlin_config.json in the current working directory

Requirements

use mc-apply.py

Benefits

• Produces requested files
• Updates Configuration.h and Configuration_adv.h
• A lot more readable
• Actually useful errors

Related Issues

• [BUG] mc-apply script doesn't function #27612

[thinkyhead]

I updated the config dump so it has file groupings as expected by mc-apply.py and then adjusted mc-apply.py to use our standard config.set(file, key, val) and config.add(file, key). I discovered that the ZIP format used for embedding is not compatible with macOS unzip so I switched to a more compatible algorithm. Compression is less efficient, but I also removed the ignore fields in the export, so the ZIP should not be too much larger.