Contribute `Info.plist` definitions back

[rsubtil]

#359 and godotengine/godot#81733 (comment) revealed that framework dependencies on macOS require a Info.plist file, otherwise exporting for macOS fails due to code signing/notarization issues. These files were manually created for RetroHub, but should be set/contributed on the original projects:

• https://github.com/rsubtil/godot-blurhash
• https://github.com/retrohub-org/godot-rcheevos-rhash