[CLI] Rewrite the command line interface (solc) and consider using StandardCompiler as backend.

CommandLineInterface.cpp is just one single huge mess right now :-). See other related issues #9579, #8722, #5306.

For an initial implementation see #11960.

Tasks:
- [x] #6900 (to avoid the need to rewrite this JSON code)
- [ ] #10278 (to remove the need creating a translator to `--combined-json`)
- [x] #11507
- [ ] Support displaying error ids (this is optional, we could manually craft the error output, but if we want to use `formattedMessage` then this is needed)
- [ ] After doing this transition, the back-and-forth conversion done in `CommandLineParser` is no longer needed as the JSON should just expect the input strings

The rewrite is also a good opportunity to fix confusing options:
- [ ] #14364
- [ ] #13714

Start with CommandLineInterface.cpp and the initial implementation referenced in #11960, then inspect StandardCompiler and CommandLineParser to understand the proposed transition. Review the related issues and unchecked tasks, including #10278, error IDs, and confusing options; done means the CLI rewrite is complete and the listed conversions and options are addressed.

Written by the indexing model from the issue text.