ESP32 BLE Mouse Versions Save

Changelog:

• Feature: Added onStarted hook (Thanks to @dvv for implementing this in PR #11)
• Feature: Add iOS compatibility* (Thanks to @00ghost for reporting in #3 and @nori-dev-akg for mentioning the fix and then @consciouspnm for mentioning the full fix)
• Docs: Update feature list in README.md

*Some people may still encounter issues, especially on old devices.

Changelog:

• Fix: battery status setting* (Thanks to @grafmar for fixing this in PR #4)
• Docs: Improve README.md

*It doesn't show up in Android's status bar though. You can however read it using apps like BLExplorer.

Changelog:

• Fix: Default device name and manufacturer
• Fix: Bug that would cause setBatteryLevel (which is not functional atm) to crash the device
• Fix: Compatibility with Android and Windows (See: #1)