Re-add static code analysis for pull requests

[astrogeco]

Describe the bug
The Travis CI runner ran cppcheck which we don't have anymore

To Reproduce
Submit pull request, notice that Travis CI doesn't run anymore.

Expected behavior
A success or failure report of a cppcheck run.

Code snips
Check from travis.yml

  # Check versions
  - cppcheck --version

  #cppcheck flight software psp/fsw
  - cppcheck --force --inline-suppr --std=c99 --language=c --error-exitcode=1 --enable=warning,performance,portability,style --suppress=variableScope --inconclusive fsw 2>cppcheck_flight_psp.txt
  - |
    if [[ -s cppcheck_flight_psp.txt ]]; then
      echo "You must fix cppcheck errors before submitting a pull request"
      echo ""
      cat cppcheck_flight_psp.txt
      exit -1
    fi
 

System observed on:
n/a

Additional context
Part of ongoing TravisCI to GitHub Actions migration