Change path for data folder "~/remnote" in macOS application

The current location of the remnote data folder in macOS is incorrect according to the system's data location rules and in relation to the user. The application should use a different location, e.g:

~/Library/Application Support

The Windows version of the application uses the correct folder in %AppData%.

Reference links:

• https://developer.apple.com/library/archive/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/MacOSXDirectories/MacOSXDirectories.html

• https://apple.stackexchange.com/questions/28928/what-is-the-macos-equivalent-to-windows-appdata-folder