…to remove its given file from PBXFileReference.

…eference after being modified by Xcode.

Adding COMPILER_FLAGS with = or space corrupts the project file and it can not be parsed by xcode or xcodebuild
I tested how xcode behaves and it adds quotes around the COMPILER_FLAGS setting, but it doesn't add quotes to Weak from ATTRIBUTES.
This is the reason this fix is applied only when opt.compilerFlags is present

Xcode handles this correctly and some tools might produce such projects.

… trailing comma

In our testing, we've hit projects where trailing commas are not present with array entries.

By given array of files add a build phase which includes the given files.
All files should be added to PBXBuildFileSection as well as to the PBXFileReferenceSection

Upon adding a build phase an unnecessary property is added, namely uuid

For given file paths add them to Build and File Reference sections if they're not already added and create a PBXGroup with given name, path and optional sourceTree.
sourceTree defaults to <group> if no other specified

By given configuration objects, default configuration name and a comment add all configurations to PBXXCBuildConfigurationSection and add an XCConfigurationList

This way new knownRegions, TargetAttributes and targets can be added

Add a check - if a file exists in the PBXBuildFile and the PBXFileReference sections do not add it

Includes a bit of refactoring and extracting common logic between pbxGroupByName and pbxTargetByName into the more powerful function pbxItemByComment.

This enables greater customization when adding file to FileReference Section, like for example adding build output files (e.g. .app files or .appex files)

Includes creation of a PBXContainerItemProxy for each PBXTargetDependency and including the PBXTargetDependencies to the given target

…framework