Remove non-breaking spaces from JSON strings and make JSON formatter replace nbsp with escape sequence

[Qrox]

Summary

Infrastructure "Make JSON formatter replace nbsp with escape sequence"

Purpose of change

For some reason non-breaking spaces (\u00A0) snuck into some of the JSON files where they are not really needed, which is also interfering with the text style check and potentially text wrapping in-game.

Describe the solution

1. Replace nbsp with normal space.
2. Make nbsp stand out by replacing it with its escape sequence in the JSON formatter, so people can notice if nbsp is accidentally added, and nbsp can still be used in case it is actually needed.

Describe alternatives you've considered

Testing

Game loads.

Non-breaking spaces in JSON files are replaced with \u00A0 when formatted.

Additional context

[github-actions]

Auto-requesting reviews from non-collaborators: @GuardianDll @jbytheway

[github-actions]

Spell checker encountered unrecognized words in the in-game text added in this pull request. See below for details.

Click to expand

• An English darling and icon of the First World War, the Short Magazine Lee-Enfield Mk III was the standard issue battle rifle of the British commonwealth from 1907. Chambered for .303 ammunition, the rifle makes use of ten-round detachable magazines. With its full-length wooden handguard, brass buttplate, and smooth action, the Lee-Enfield cuts a recognizable profile in either the trenches of the Great War or the zombie-strewn wastelands.
• This is a sturdy cardboard box, stamped with manufacturer markings and emblazoned with the stylized image of an assembled rifle. Containing appropriate retool components for an average weapon platform, including upper receiver assemblies, swappable barrels, and assorted extras (such as magazines), its contents could be used to rechamber a compatible rifle.

This alert is automatically generated. You can simply disregard if this is inaccurate, or (optionally) you can also add the new words to tools/spell_checker/dictionary.txt so they will not trigger an alert next time.

[akrieger]

You'll need to rebase it seems.