[llvm-readobj][COFF] add .llvm.call-graph-profile section dump

Summary: Dumping contents of `.llvm.call-graph-profile` section of COFF in the same format as ELF.

Reviewers: jhenderson, MaskRay, hans

Reviewed By: jhenderson

Subscribers: grimar, rupprecht, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D81894