message: add option to disable automatic update
diff: @@ -50,6 +50,7 @@ set(BUILD_SHARED_LIBS OFF)
  option(FLATPAK "Building for flatpak" OFF)
  option(DEBUG_FLATPAK "Building but using flatpak urls for testing" OFF)
  +option(DISABLE_AUTOMATIC_UPDATE "Disable automatically updating Gittyup from the Gui instead of the package manager" OFF)
  option(USE_SYSTEM_OPENSSL "Use the system-wide OpenSSL installation" OFF)
  option(
  USE_SYSTEM_LIBGIT2
  