Capture crash dumps from libfuzzer, when provided

[Porges]

Enables capturing crashdumps generated by ASAN at point of failure.

This helps in several ways:

• provides a crash dump in the case that we cannot repro a failure later
• some people have stated that crash dumps would be more useful to their team than the repro VM
• we should be able to use these for automated submission to Watson or similar

---

Crash dumps are automatically collected (for libfuzzer) jobs, if we find any. They should be activated by enabling crash dumps in ASAN, via:

• On Linux: ASAN_OPTIONS=disable_coredump=0:abort_on_error=1:unmap_shadow_on_exit=1
  • OneFuzz will override the (Ubuntu) crash dump options to generate core dumps instead and then upload them.
• On Windows: ASAN_SAVE_DUMPS=my_dump.dmp
  • OneFuzz will look for any *.dmp files in the working directory and then upload them.

In both cases, the crash dump will be renamed to match the crashing input, if possible, and uploaded to a new crashdumps container.

---

Also updated: the “simple” LibFuzzer test has been updated to be compiled with cl.exe instead of clang on Windows, so that we are exercising the MSVC implementation of ASAN/LibFuzzer, and the CI image has been updated to windows-2022. The restriction to an old version of the Windows SDK has been removed.

[codecov-commenter]

Codecov Report

Merging #2793 (09a7ec8) into main (74ae105) will decrease coverage by 0.11%.
The diff coverage is 0.71%.

@@            Coverage Diff             @@
##             main    #2793      +/-   ##
==========================================
- Coverage   34.34%   34.23%   -0.11%     
==========================================
  Files         297      297              
  Lines       36250    36366     +116     
==========================================
+ Hits        12450    12451       +1     
- Misses      23800    23915     +115     

Files Changed	Coverage Δ
src/ApiService/ApiService/OneFuzzTypes/Enums.cs	32.39% <ø> (ø)
src/ApiService/ApiService/OneFuzzTypes/Model.cs	72.63% <0.00%> (-0.09%)	⬇️
src/ApiService/ApiService/onefuzzlib/Config.cs	0.00% <0.00%> (ø)
src/ApiService/ApiService/onefuzzlib/Defs.cs	0.00% <0.00%> (ø)
src/agent/onefuzz-task/src/local/common.rs	0.00% <ø> (ø)
src/agent/onefuzz-task/src/local/libfuzzer_fuzz.rs	0.00% <0.00%> (ø)
src/agent/onefuzz-task/src/local/template.rs	6.35% <0.00%> (-0.03%)	⬇️
...nt/onefuzz-task/src/tasks/fuzz/libfuzzer/common.rs	17.63% <0.00%> (-3.41%)	⬇️
...rc/agent/onefuzz-task/src/tasks/fuzz/supervisor.rs	0.00% <0.00%> (ø)
src/agent/onefuzz-telemetry/src/lib.rs	2.13% <0.00%> (-0.01%)	⬇️
... and 1 more