`.bundle` explicitFileType Wrong in `.pbxproj`

[Adam Khazi]

Context / What 🕵️‍♀️

Adding a bundle in Xcode 12 Beta 2 and Xcode 11.5 will add a .bundle reference under the Products folder. This reference in the .pbxproj will have explicitFileType = wrapper.cfbundle. Xcodeproj sets this to explicitFileType = "wrapper.plug-in" which is incorrect. We can see the git diff of what Tuist might generate and what Xcode 11.5 might create below (from the fixture https://github.com/tuist/tuist/tree/master/fixtures/ios_app_with_framework_and_resources):

-               A16B291CD4C238C56FCD434A /* StaticFramework2Resources.bundle */ = {isa = PBXFileReference; explicitFileType = "wrapper.plug-in"; includeInIndex = 0; path = StaticFramework2Resources.bundle; sourceTree = BUILT_PRODUCTS_DIR; };
+               A16B291CD4C238C56FCD434A /* StaticFramework2Resources.bundle */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = StaticFramework2Resources.bundle; sourceTree = BUILT_PRODUCTS_DIR; };

Proposal 🎉

Change the value of bundle inside Xcode.swift to wrapper.cfbundle.