Flippernested

Fix wrong invalid/skipped keys count

Changes:

- Added new scene with information about why nonces aren't collected (skipped/invalid)

- Removed some old code, breaking compability with old firmware

- App renamed from "Flipper (Mifare) Nested" to "Flipper Nested"

Fix fallback to hardnested

Fix .nested folder if running Hard Nested

Fix skipped = false

Fix invalid free count