Add binary coverage merging

[ranweiler]

Enable merging binary coverage measurements, combining offset counts via saturating addition or integer maximum.

[codecov-commenter]

Codecov Report

Merging #2724 (5e65571) into main (df40c99) will decrease coverage by 3.34%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2724      +/-   ##
==========================================
- Coverage   28.75%   25.40%   -3.35%     
==========================================
  Files         320      123     -197     
  Lines       38191    12884   -25307     
==========================================
- Hits        10980     3273    -7707     
+ Misses      27211     9611   -17600     

Impacted Files	Coverage Δ
src/agent/coverage/src/binary.rs
src/agent/coverage/src/record/linux.rs
src/agent/coverage/src/record/windows.rs
src/agent/win-util/src/com.rs
...gent/onefuzz-task/src/tasks/report/crash_report.rs
src/agent/coverage-legacy/src/demangle.rs
src/agent/storage-queue/src/azure_queue.rs
src/agent/srcview/src/modoff.rs
src/agent/onefuzz-agent/src/agent.rs
src/agent/win-util/src/hr.rs
... and 187 more

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