[projmgr] Handle cpp regex in `for-context` and `not-for-context` nodes

[grasci-arm]

Address https://github.com/Open-CMSIS-Pack/devtools/issues/840

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 85.71429% with 7 lines in your changes missing coverage. Please review.

Project coverage is 63.62%. Comparing base (22a1a0a) to head (7eccd68).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1602 +/- ## ========================================== + Coverage 63.56% 63.62% +0.05% ========================================== Files 162 162 Lines 31295 31338 +43 Branches 19180 19207 +27 ========================================== + Hits 19894 19940 +46 + Misses 7533 7532 -1 + Partials 3868 3866 -2 ``` | [Flag](https://app.codecov.io/gh/Open-CMSIS-Pack/devtools/pull/1602/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Open-CMSIS-Pack) | Coverage Δ | | |---|---|---| | [projmgr-cov](https://app.codecov.io/gh/Open-CMSIS-Pack/devtools/pull/1602/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Open-CMSIS-Pack) | `80.57% <85.71%> (+0.10%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Open-CMSIS-Pack#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files](https://app.codecov.io/gh/Open-CMSIS-Pack/devtools/pull/1602?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Open-CMSIS-Pack) | Coverage Δ | | |---|---|---| | [tools/projmgr/include/ProjMgrParser.h](https://app.codecov.io/gh/Open-CMSIS-Pack/devtools/pull/1602?src=pr&el=tree&filepath=tools%2Fprojmgr%2Finclude%2FProjMgrParser.h&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Open-CMSIS-Pack#diff-dG9vbHMvcHJvam1nci9pbmNsdWRlL1Byb2pNZ3JQYXJzZXIuaA==) | `100.00% <ø> (ø)` | | | [tools/projmgr/src/ProjMgrWorker.cpp](https://app.codecov.io/gh/Open-CMSIS-Pack/devtools/pull/1602?src=pr&el=tree&filepath=tools%2Fprojmgr%2Fsrc%2FProjMgrWorker.cpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Open-CMSIS-Pack#diff-dG9vbHMvcHJvam1nci9zcmMvUHJvak1ncldvcmtlci5jcHA=) | `86.86% <100.00%> (+0.02%)` | :arrow_up: | | [tools/projmgr/test/src/ProjMgrTestEnv.cpp](https://app.codecov.io/gh/Open-CMSIS-Pack/devtools/pull/1602?src=pr&el=tree&filepath=tools%2Fprojmgr%2Ftest%2Fsrc%2FProjMgrTestEnv.cpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Open-CMSIS-Pack#diff-dG9vbHMvcHJvam1nci90ZXN0L3NyYy9Qcm9qTWdyVGVzdEVudi5jcHA=) | `74.32% <100.00%> (+1.08%)` | :arrow_up: | | [tools/projmgr/src/ProjMgrYamlParser.cpp](https://app.codecov.io/gh/Open-CMSIS-Pack/devtools/pull/1602?src=pr&el=tree&filepath=tools%2Fprojmgr%2Fsrc%2FProjMgrYamlParser.cpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Open-CMSIS-Pack#diff-dG9vbHMvcHJvam1nci9zcmMvUHJvak1ncllhbWxQYXJzZXIuY3Bw) | `82.49% <84.61%> (+1.47%)` | :arrow_up: | | [tools/projmgr/test/src/ProjMgrUnitTests.cpp](https://app.codecov.io/gh/Open-CMSIS-Pack/devtools/pull/1602?src=pr&el=tree&filepath=tools%2Fprojmgr%2Ftest%2Fsrc%2FProjMgrUnitTests.cpp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Open-CMSIS-Pack#diff-dG9vbHMvcHJvam1nci90ZXN0L3NyYy9Qcm9qTWdyVW5pdFRlc3RzLmNwcA==) | `79.40% <77.27%> (-0.02%)` | :arrow_down: | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/Open-CMSIS-Pack/devtools/pull/1602/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Open-CMSIS-Pack)

[github-actions[bot]]

Test Results

    3 files     18 suites   7m 2s :stopwatch:   346 tests   346 :white_check_mark: 0 :zzz: 0 :x: 1 038 runs  1 038 :white_check_mark: 0 :zzz: 0 :x:

Results for commit 7eccd686.