[CSSPGO] Support stale profile matching for LTO

As in per-link time, callsites could be optimized out by inlining, we don't have those original call targets in the IR in LTO time. Additionally, the inlined code doesn't actually belong to the original function, the IR locations or pseudo probe parsed from it are incorrect and could mislead the matching later.

This change adds the support to extract the original IR location info from the inlined code, specifically, it make sure to skip all the inlined code that doesn't belong the original function, but before that, it processes the inline frames of the debug info to extract the base frame and recover its callsite and callee target(name).

Measured on some stale profile instances, all showed some perf improvements.

Reviewed By: hoy, wenlei

Differential Revision: https://reviews.llvm.org/D156722