Added option to show numeric battery percentage on taskbar. (sanraith#12

, sanraith#14)

Add setting to display charging state.

* replace "_OnBatteryLevelChanged" with "Battery Get By Device Handle…

…" event to reliably detect charging state.

Issue sanraith#4: Restart V4 watcher for fresh log files.

Refactored watcher files.
Updated dependencies.

Issue sanraith#3: Fix a typo in log filename regex.

Issue sanraith#3: Use last systrayv2 log file as source for Synapse V…

…4 beta.

Issue sanraith#3: Update log location for Synapse 4 beta.

Issue sanraith#1: Add support for Razer Synapse 4.

- Add tooltips for settings
- Update README

Only allow one settings window at a time.

Add screenshots to readme.