The Info.plist template incorrectly uses parentheses instead of curly braces,
which means that building the .app bundle using regular 'make' results in the
variable not being replaced, and hence the app bundle won't start because the
executable name is incorrect.
This commit fixes this issue.
The OS will render the widgets using the system screen DPI (instead of
being locked at @1x resolution).
This has no impact on the existing high-DPI rendering code in Citra,
which means that the resolution of the emulated content is increased
to the real number of pixels, as on other platforms.
Instead of letting CMake re-generate an automatic Info.plist file on
every build, use our own. This allows greater control on the application
bundle settings.
