Update Rectify11TrayTool to version 2.0 (#574)

- Rectify11TrayTool was previously not working with the Rectify11 installation due to being located in C:\Windows\Rectify11. It simply lacked the permissions to drop the built-in binaries (SecureUXHelper.exe and ThemeDll.dll) required for changing themes. I resolved this issue by having the tray tool drop the binaries in AppData\Local\Temp.

- My modified version of SecureUXHelper.exe still has 0 detections by antivirus engines, thankfully.

- Added a feature called Apply Custom Theme (.theme) which can be selected from the tray tool menu. It allows selecting any other custom .theme file and applies the theme. For example, if a user changes their background and colors for their R11 theme and save as a custom .theme file. One issue, though, is that it still does not allow selecting Microsoft themes because I haven't figured out how to parse DisplayName=@%SystemRoot%\System32\themeui.dll,-2114, for example, into the proper DisplayName yet.

Co-authored-by: Mikhail<[email protected]>