Removal of bootmagic lite terminology

[zvecr]

Description

Partial backwards compatibility, as adding handling to check for _lite functions exist causes firmware to oversize.

Opportunity here to change bootmagic_lite(), currently bootmagic_scan(), to something more descriptive of the action it performs?

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Issues Fixed or Closed by This PR

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[infinityis]

Agreed that there is substantial opportunity for a more descriptive, less intimidating name than bootmagic:

• should_jump_to_bootloader
• boot_decision
• boot_selector
• startup_selector
• go_to_bootloader
• bootloader_check

And some far-less-likely candidates that still get honorable mentions:

• boot_mcbootloader
• to_boot_or_not_to_boot
• i_like_big_bootloaders
• give_me_bootloader_or_give_me_main_program
• booter_late_than_never
• yo_firmware_imma_let_you_boot
• boot_and_the_beast