* Remove obsolete code
* Fix path modification of a relative folder
Replace start token '.' with file path to the project file to make sure that the path './wells/a-1h.dev' can be imported correctly.
* Add more logging when keywords are missing from import
Enable c++20 in top level cmake. Keep c++17 for GrpcInterface, as the protoc tool does not work with c++20.
Several code adjustments to fix compiler issues.
