Set response planner id in planner plugins and warn if it is not set

[sjahr]

Description

Follow up to #2202: Explicitly set the planner_id in all the available planner plugins + warn if we're making assumptions about the ID because the planner plugin does not handle it correctly.

Checklist

• Required by CI: Code is auto formatted using clang-format
• Extend the tutorials / documentation reference
• Document API changes relevant to the user in the MIGRATION.md notes
• Create tests, which fail without this PR reference
• Include a screenshot if changing a GUI
• While waiting for someone to review your request, please help review another open pull request to support the maintainers

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.02 🎉

Comparison is base (8e48329) 50.50% compared to head (4a2062e) 50.51%.

❗ Current head 4a2062e differs from pull request most recent head 049b031. Consider uploading reports for the commit 049b031 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2236      +/-   ##
==========================================
+ Coverage   50.50%   50.51%   +0.02%     
==========================================
  Files         386      386              
  Lines       31730    31731       +1     
==========================================
+ Hits        16022    16026       +4     
+ Misses      15708    15705       -3     

Impacted Files	Coverage Δ
...strial_motion_planner/src/trajectory_generator.cpp	96.76% <100.00%> (+0.02%)	⬆️

... and 2 files with indirect coverage changes

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