[LLDB][AMDGPU] Refine GPU core comparison checks

[thechenli]

Changes:

• Add module comparison and GPU backtrace comparison tests.
• Auto-load debug info for module/backtrace comparisons.
• Select the ROCLLDB GPU wave matching ROCGDB's selected AMDGPU wave id before reading registers, locals, and backtraces.
• Compare modules by normalized containment instead of exact raw list equality.
• Treat LLDB-only modules and duplicate module counts as diagnostics.
• Normalize debugger-specific module spelling for memory code objects, file-backed code objects, URL-escaped paths, and vdso.
• Avoid failing backtrace comparison for demangler spelling differences or ROCGDB-unknown/ROCLLDB-symbolized frames.

Tested:

• python3 -m py_compile on the modified comparison framework files.
• Eval runs against production merged GPU cores.