Resolve "Documentation debt"

What does this MR do?

Adds more information to the README, and documents all the C++ classes and its methods.

Is there something that needs to be double checked?

I don't think so

Can this MR be accepted?

• Implemented
  • Updated README
  • C++ classes documented
  • Move and rename c++ headers
• Pipelines passing
  • 
  • 
  • 
• Delete branch option set
• Added entry to CHANGELOG.md

Related issues

Closes #18 (closed)

dune/copasi/common/CMakeLists.txt

+install(FILES   coefficient_mapper.hh
+                enum.hh
+                muparser_data_handler.hh
+                pdelab_expression_adapter.hh
+                tiff_grayscale.hh
+        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/dune/copasi/common")
\ No newline at end of file