[csolution-rpc] Expose evaluated dynamic access sequences

[grasci-arm]

Store absolute paths of evaluated dynamic access sequences such as OutDir().
Expose them via RPC methods GetVariables and GetContextInfo.
Background support for ARM-software/vscode-cmsis-csolution#510

[github-actions]

Test Results

    3 files     21 suites   14m 25s ⏱️
  450 tests   450 ✅ 0 💤 0 ❌
1 350 runs  1 350 ✅ 0 💤 0 ❌

Results for commit 341d03d.

[codecov]

Codecov Report

❌ Patch coverage is 58.82353% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 64.56%. Comparing base (fb3e895) to head (341d03d).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
tools/projmgr/src/ProjMgrWorker.cpp	53.33%	1 Missing and 6 partials ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2388   +/-   ##
=======================================
  Coverage   64.55%   64.56%           
=======================================
  Files         145      145           
  Lines       26085    26090    +5     
  Branches    15733    15738    +5     
=======================================
+ Hits        16839    16844    +5     
  Misses       7089     7089           
  Partials     2157     2157           

Flag	Coverage Δ
projmgr-cov	87.46% <58.82%> (+<0.01%)	⬆️

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Files with missing lines	Coverage Δ
tools/projmgr/include/ProjMgrWorker.h	83.33% <ø> (ø)
tools/projmgr/src/ProjMgrRpcServer.cpp	83.50% <100.00%> (+0.05%)	⬆️
tools/projmgr/src/ProjMgrWorker.cpp	87.98% <53.33%> (+<0.01%)	⬆️

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