Vanced manager

Version 2.6.0 changelog:

- New UI for Vanced app cards

- Added a progress percentage inside downloader dialogs

- Pressing the version card in the About menu will now show a manager changelog menu

- Updated layouts to make them look more similar

- "INSTALL_FAILED_INTERNAL_ERROR: Permission denied" will now always redirect to the MIUI optimizations dialog

- Optimized accent-themed views

- Removed/Updated old code

- Fixed button not working in the welcome screen for RTL languages

- Fixed "[INSTALL_FAILED_ALREADY_EXISTS: Attempt to re-install com.google.android.youtube without first uninstalling]" in root installer

- Fixed crash if the session id is null in root installer