[projmgr] Set cdefault compiler deprecation warning (#1029)

[grasci-arm]

Address #1698

Note that removing a schema property from a node that does not allow additional properties is a breaking change.
For this reason select-compiler can only be removed in the next major release. Schema descriptions with the deprecation message were added instead.

[github-actions]

Test Results

    3 files     18 suites   8m 19s ⏱️
  368 tests   368 ✅ 0 💤 0 ❌
1 104 runs  1 104 ✅ 0 💤 0 ❌

Results for commit b4712d6.

[jkrech]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.39%. Comparing base (aeb3e69) to head (b4712d6).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1764   +/-   ##
=======================================
  Coverage   76.39%   76.39%           
=======================================
  Files         163      163           
  Lines       32072    32074    +2     
  Branches    19606    19608    +2     
=======================================
+ Hits        24502    24504    +2     
  Misses       7551     7551           
  Partials       19       19           

Flag	Coverage Δ
projmgr-cov	96.67% <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/projmgr/src/ProjMgrYamlParser.cpp	91.04% <100.00%> (+0.02%)	⬆️