feat(ctrace): decode Armv8-M DWT match packets

[thorstendb-ARM]

Summary

Add support for Armv8-M Data Trace Match packets.

• Decode comparator-only match packets instead of reporting an unsupported address payload.
• Emit CSV dwt rows with the comparator in source; value, PC, and offset remain empty.
• Add a compact DWT_MATCH CTF event containing the comparator and trace-quality information.
• Visualize matches in Trace Compass as 1 µs Something happened pulses.
• Preserve pending DWT fragments before emitting a match.

Tests

• Added unit tests for decoding, CSV, CTF, filtering, metadata, and XML.
• Added an 18-byte synthetic Armv8-M SWO fixture containing synchronization, match packets for comparators 0–3, and local timestamps.
• The fixture is generated from the architecture specification and was not captured from real hardware.
• All ctrace unit, integration, and executable tests pass.

Checklist

• 🤖 This change is covered by unit tests (if applicable).
• 🤹 Manual testing has been performed (if necessary).
• 🛡️ Security impacts have been considered (if relevant).
• 📖 Documentation updates are complete (if required).
• 🧠 Third-party dependencies and TPIP updated (if required).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.58%. Comparing base (a46c6e4) to head (739e082).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2592      +/-   ##
==========================================
+ Coverage   72.54%   72.58%   +0.03%     
==========================================
  Files         185      185              
  Lines       30559    30602      +43     
  Branches    17993    18003      +10     
==========================================
+ Hits        22170    22213      +43     
  Misses       6080     6080              
  Partials     2309     2309              

Flag	Coverage Δ
ctrace-cov	99.79% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
tools/ctrace/src/decode/DwtPacketDecoder.cpp	100.00% <100.00%> (ø)
tools/ctrace/src/model/TraceEvent.h	100.00% <ø> (ø)
tools/ctrace/src/model/TraceSelection.cpp	100.00% <100.00%> (ø)
tools/ctrace/src/output/csv/CsvRowMapper.cpp	100.00% <100.00%> (ø)
tools/ctrace/src/output/ctf/CtfEncoder.cpp	100.00% <100.00%> (ø)
tools/ctrace/src/output/ctf/CtfMetadataWriter.cpp	100.00% <100.00%> (ø)
tools/ctrace/src/output/ctf/CtfSchema.h	100.00% <100.00%> (ø)
...ls/ctrace/src/output/ctf/TraceCompassXmlWriter.cpp	98.78% <100.00%> (+0.09%)	⬆️

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[github-actions]

Test Results

  4 files    4 suites   2s ⏱️
206 tests 206 ✅ 0 💤 0 ❌
412 runs  405 ✅ 7 💤 0 ❌

Results for commit 739e082.

[jreineckearm]

Changes look reasonable, not tested though due to the lack of test HW.