[llvm-profgen] Warn on invalid range and show warning summary

Two things in this diff:

1) Warn on the invalid range, currently three types of checking, see the detailed message in the code.

2) In some situation, llvm-profgen gives lots of warnings on the truncated stacks which is noisy. This change provides a switch to `--show-detailed-warning` to skip the warnings. Alternatively, we use a summary for those warning and show the percentage of cases with those issues.

Example of warning summary.
```
warning: 0.05%(1120/2428958) cases with issue: Profile context truncated due to missing probe for call instruction.
warning: 0.00%(2/178637) cases with issue: Range does not belong to any functions, likely from external function.
```

Reviewed By: hoy

Differential Revision: https://reviews.llvm.org/D111902