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

[ekpyron]

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

For an initial implementation see #11960.

Tasks:

• Consider replacing jsoncpp #6900 (to avoid the need to rewrite this JSON code)
• [CLI] Drop --combined-json option and direct users to standard json #10278 (to remove the need creating a translator to --combined-json)
• Support coloured messages in standard json #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:

• Replace --ir output with --ir-optimized #14364
• Contract/Remove CLI options like --yul, --assemble and --strict-assembly #13714

[axic]

Strange there wasn't an issue for this, it has been one goal for me at least 👍

[cameel]

Of course there was :) #7813.
I'm closing it in favor of this one here. As short as its description is, it's still more detailed than in the old one :)

[ekpyron]

IMHO another argument for this: as far as I'm concerned #9954 should not have been done like that, but rather the command line interface be fixed.

[chriseth]

@ekpyron we should do both.

[axic]

Need to also keep #8847 in mind, such as:

Some options available to the standard-json format do not seem to be available as CLI flags. I'm missing in particular source mappings for yul which was introduced only for the json options in #8378. It would be nice if feature parity between CLI flags and json opts was pursued as a general rule.