Codechange: compile-time validate the string format of IConsolePrint

[TrueBrain]

Motivation / Problem

While working on #11800, found out that IConsolePrint isn't all that nice. It doesn't check the format of the string.

Description

Address that issue, and make it C++20 compatible.

This also means we can no longer use runtime picking what string to use.

Limitations

Checklist for review

Some things are not automated, and forgotten often. This list is a reminder for the reviewers.

• The bug fix is important enough to be backported? (label: 'backport requested')
• This PR touches english.txt or translations? Check the guidelines
• This PR affects the save game format? (label 'savegame upgrade')
• This PR affects the GS/AI API? (label 'needs review: Script API')
  • ai_changelog.hpp, game_changelog.hpp need updating.
  • The compatibility wrappers (compat_*.nut) need updating.
• This PR affects the NewGRF API? (label 'needs review: NewGRF')
  • newgrf_debug_data.h may need updating.
  • PR must be added to API tracker