Project-wide whitespace cleanup

[treymerkley]

So while working on src/Tasks/GenerateResource.cs I accidentally found that there's a relatively large amount of whitespace in the entire MSBuild project. Can I clean this up? I'll do it programmatically of course, and (once I find one) I'll insert the function I use.

[rainersigwald]

Let's limit it to only trailing whitespace, but yeah, I think we'd take a PR to do that.

Areas to be careful of:

• Try not to change whitespace inside string literals
• Is anything in our MSBuild logic whitespace-sensitive? I sure hope not!

[treymerkley]

only trailing? I should be able to do that.

Rather than trying to clean the whole project at once then, what if I went a folder at a time, starting at the root, that way any bugs that arise are immediately noticeable and easier to fix?

[rainersigwald]

Seems reasonable to me!

[treymerkley]

So I'm just using https://github.com/purcell/whitespace-cleanup-mode and doing it on a file-by-file basis so it's easier to track down what broke in the event something is whitespace dependent.