[llvm-debuginfo-analyzer] Move 'initializeFileAndStringTables' to the COFF Library.

[CarlosAlbertoEnciso]

Extracted from llvm/tools/llvm-debuginfo-analyzer/README.txt

There is some code in the CodeView reader that was extracted/adapted
from tools/llvm-readobj/COFFDumper.cpp that can be moved to the COFF
library.

We had a similar case with code shared with llvm-pdbutil that was moved
to the PDB library: https://reviews.llvm.org/D122226

[llvmbot]

@llvm/issue-subscribers-debuginfo

Author: Carlos Alberto Enciso (CarlosAlbertoEnciso)

Extracted from [llvm/tools/llvm-debuginfo-analyzer/README.txt](https://github.com/llvm/llvm-project/blob/main/llvm/tools/llvm-debuginfo-analyzer/README.txt)

There is some code in the CodeView reader that was extracted/adapted
from tools/llvm-readobj/COFFDumper.cpp that can be moved to the COFF
library.

We had a similar case with code shared with llvm-pdbutil that was moved
to the PDB library: https://reviews.llvm.org/D122226