Eliminate Qt from CCFUtils

[cboulay]

I mostly extracted CCFUtils as a standalone lib. Then I replaced QtXML usage with pugixml. I also replaced all other Qt types with STL types.

Caveats:

• Isolation of CCFUtils is limited to being a PUBLIC dependency because the top-level cbSdk headers use CCFUtils' types.
• CCFUtils no longer does device communication.
  • Functions that previously did a load-from-file-then-send-to-device were bookended by callbacks to indicate start and completion; now the callbacks only bookend the load-from-file part.
• The QtXML to pugixml conversion needs to be tested.
• The CCFWrite coroutine previously was set to lowest priority and no there is no priority set on it.
• Replacing QVariant with std::any may incur a performance hit. Luckily we don't load or write the CCF often.
• The QtXML -> pugixml conversion that was done aimed to be mostly 1:1. We can probably better leverage the pugixml API.
• It would probably be better to add cbPKT_PROCINFO to cbCCF struct, instead of my solution which was to add members and methods to set a procinfo store on the m_pImpl which was then used during CCF writing.

I'm leaving this PR as a draft for now until I can test CCF management on multiple platforms.