PLUME-67: Support for multiple hook points through states

[antons-it]

Description

This draft PR proposes tags in plume, to decorate the execution of manager methods and define a plume state. The state can be queried by plugins.

Not for review yet - for discussion only

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 90.92025% with 74 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.83%. Comparing base (2a5eb82) to head (861b017).

Files with missing lines	Patch %	Lines
src/plume/api/plume.cc	71.42%	18 Missing ⚠️
src/plume/TagDefinitions.def	0.00%	17 Missing ⚠️
src/plume/PlumeTag.cc	21.05%	15 Missing ⚠️
src/plume/PlumeState.cc	95.30%	7 Missing ⚠️
src/plume/api/plume_manager.F90	76.00%	6 Missing ⚠️
src/plume/api/plume_state.F90	68.75%	5 Missing ⚠️
src/plume/Manager.cc	88.23%	2 Missing ⚠️
tests/core/simple_config_plugin.h	66.66%	2 Missing ⚠️
examples/example1.c	0.00%	1 Missing ⚠️
tests/core/simple_config_plugin.cc	91.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #28      +/-   ##
===========================================
+ Coverage    72.11%   75.83%   +3.71%     
===========================================
  Files           88       97       +9     
  Lines         3626     4432     +806     
  Branches       317      367      +50     
===========================================
+ Hits          2615     3361     +746     
- Misses        1011     1071      +60     

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