Add possibilty to add a user-specified windows manifest file during exe creation on windows #61451
Description
I am in the process of creating dart bindings for native GUIs on Linux, OSX, iOS and Windows without going through flutter. This works well on Linux with GTK+, it would work on OSX if I could tell Dart to use the correct main thread for the GUI, and it almost works on Windows, except that the resulting app gets a Windows95 look because I am not able to embed the appropriate manifest file into the binary. The manifest file is a short XML file that needs to be linked (embedded) into the .exe file. In principle, a manifest file could also be provided as an external file, but I have not been able to get that to work (maybe because Dart already embeds a manifest file into the binary, and if it does, this one will be used and an external one will be ignored).
Typically, the manifest file can be included into a Windows resource file (*.rc) and both together can be "compiled" to an obj file which is then linked with all the other obj files into the final exe binary.
Ideally, I would like to have an option to link the obj file that contains the manifest into the resulting exe file.