chore: allow for range of line numbers in line number system test

[nolanmar511]

This change also logs the pprof output to make failures easier to debug.

[codecov-io]

Codecov Report

Merging #141 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master     #141     +/-   ##
=========================================
  Coverage   42.26%   42.26%             
=========================================
  Files          28       14     -14     
  Lines        4126     2063   -2063     
  Branches       84       42     -42     
=========================================
- Hits         1744      872    -872     
+ Misses       2346     1173   -1173     
+ Partials       36       18     -18     

Impacted Files	Coverage Δ
...dejs/pprof-nodejs/ts/src/heap-profiler-bindings.ts
...-nodejs/pprof-nodejs/ts/test/test-heap-profiler.ts
...f-nodejs/pprof-nodejs/ts/src/profile-serializer.ts
...s/pprof-nodejs/ts/src/sourcemapper/sourcemapper.ts
.../pprof-nodejs/pprof-nodejs/ts/src/time-profiler.ts
...prof-nodejs/pprof-nodejs/ts/src/profile-encoder.ts
.../pprof-nodejs/pprof-nodejs/ts/src/heap-profiler.ts
...-nodejs/pprof-nodejs/ts/test/profiles-for-tests.ts
...odejs/pprof-nodejs/ts/test/test-profile-encoder.ts
...-nodejs/pprof-nodejs/ts/test/test-time-profiler.ts
... and 4 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d4aa87b...aeb6c43. Read the comment docs.