Replace F extension with string interpolation

[teinarss]

No description provided.

[pchote]

There are a bunch of places (e.g. the first several exception changes in the files view) where this is inserting arbitrary newlines that IMO hurt readability more than they help. Can we please unstage those?

[teinarss]

Updated.

[teinarss]

Maybe reconsider this one - there is an option even better than what ReSharper implies. https://stackoverflow.com/a/63904747

The only places where we are using {x:x2} style is in none hot paths, as far as i can see, and this PR doesn't introduces any changes with valueType.ToString(format) to {valueType:format}, which causes the boxing.

[dragunoff]

How would this work with localization? 🤔

[pchote]

The translation library has its own string replacement system, so won't interact with this at all.

[pchote]

I still think its really awful when string interpolations include arbitrarily complex expressions, but I don't think it is productive to get hung up over that here. The majority of cases in this PR are simple variables and are a clear improvement, and the ugly cases can be cleaned up the next time someone touches the impacted code.

LGTM except for a couple of small nits:

[teinarss]

Updated.

[teinarss]

Fixed.

[reaperrr]

Needs rebase, sorry. I guess we should merge this before any other PRs it might conflict with.

[teinarss]

Updated.

[reaperrr]

https://github.com/OpenRA/OpenRA/wiki/Changelog-(bleed)/_compare/13f89d35b2a38bfeb3a053e207a18fbbc9aedace...ce3669b0e1413527e261f5c820aa3b968eb659df