Update for webserver; cleanup in CMakeLists.txt

- Add oai header to typescript and html sources, add support to commands
  requiring two parameters, add more helpfiles
- Fix help bug (html comments not removed from tooltips)
- Fix backend build problem and 2 warnings
- Correctly initialize variables in nr_phy_scope.c
- Use add_subdirectory for websrv cmake build
- correctly link to asn1_lte_rrc and asn1_nr_rrc
- fix bug: correctly recognize npm packet
- only configure targets if explicitly asked for by users
- use add_subdirectory
- Use add_subdirectory for telnet cmake build
- Minor cleanup in build_oai
- Move softscope build in dedicated CMakeLists, and comment out
  DEBUG_MAC_INTERFACE option (not found in code)
- Make DEBUG_ASN1 a cmake only option ( no C macro) as it's not used as
  a C macro in the code, and develop align