Fixes for desktop-entry-spec & appstream

scripts/AppImage.patch

@@ -1,6 +1,6 @@
 --- a/OpenRGB.pro	2022-05-02 15:26:15.375947000 +0200
 +++ b/OpenRGB.pro	2022-05-02 15:29:01.997135000 +0200
-@@ -447,8 +447,6 @@
+@@ -449,8 +449,6 @@
  # Linux-specific Configuration                                                                  #
  #-----------------------------------------------------------------------------------------------#
  contains(QMAKE_PLATFORM, linux) {
@@ -9,14 +9,15 @@
      HEADERS -= $$CONTROLLER_H_WIN
  
      HEADERS +=                                                                                  \
---- a/qt/OpenRGB.desktop	2022-05-02 15:25:52.150332000 +0200
-+++ b/qt/OpenRGB.desktop	2022-05-02 15:28:27.749598000 +0200
-@@ -3,7 +3,7 @@
- Encoding=UTF-8
+--- a/qt/org.openrgb.OpenRGB.desktop
++++ b/qt/org.openrgb.OpenRGB.desktop
+@@ -4,7 +4,7 @@ Version=1.5
  Name=OpenRGB
  Comment=Control RGB lighting
+ Icon=org.openrgb.OpenRGB
+-TryExec=openrgb
 -Exec=openrgb
++TryExec=OpenRGB
 +Exec=OpenRGB
- Icon=OpenRGB
  Terminal=false
  Categories=Utility;