Remove LFS, FuriEventLoop pt2, and more OFW merging

[Willy-JL]

What's new

• Merging LFS removal from OFW
• Merging more from OFW while finishing LFW related tasks
• Cleaning up a bunch of old cruft
• To Do:
  • [x] Adapt ble spam and badkb to new ble timing capabilities
  • [x] Double check all desktop settings things
  • [x] Double check all expansion settings things
  • [x] Double check all bluetooth settings things
  • [x] Double check all notification settings things
  • [x] Double check all dolphin state things
  • [x] Double check all power settings things
  • [x] Refactor power settings for new service structure
  • [x] On SD insert:
  • [x] migrate files
  • [x] load momentum settings
  • [x] load rgb backlight settings
  • [x] load power settings
  • [x] load subghz extend settings
  • [x] resume findmy beacon
  • [x] Double check all u2f key/cnt things
  • [x] Check desktop settings run pin setup from lock menu
  • [x] Check desktop pin code helpers usage
  • [x] Reimplement exponential pin code timeout
  • [x] Must be able to lock keypad even if pin code set
  • [x] Migrate desktop keybinds to file as flipper format and dont keep in RAM
  • [x] Check extra pin code features
  • [x] Migrate settings files locations
  • [x] Remove CFG / .config path
  • [x] Check subghz cli and region file loading
  • [x] Check Virtual naming and behavior in storage settings
  • [x] Add all apps bt keys to forget devices prompt
  • [x] Update and check api symbols
  • [x] Show amount of available flash in storage settings
  • [x] Find a fix for double load of asset packs due to SD insert callback

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For the reviewer

• [x] I've uploaded the firmware with this patch to a device and verified its functionality
• [x] I've confirmed the bug to be fixed / feature to be stable

[github-actions[bot]]

Compiled f7 firmware for commit b16e8ac2:

• ☁️ Flipper Lab/App
• 📦 qFlipper Package