Add typos for CI, include typos.toml

[miguelraz]

Addresses #2660

[ehuss]

I don't really have much context here. Why are so many files being ignored?

Also, I would expect some documentation in the contributing guide. For example: What happens if it has a false positive? How do I run this locally?

[szabgab]

Some of those ignored files had typos. I think at least one of those typos were fixed already.

[miguelraz]

I'll look into which files still have typos tomorrow.

[miguelraz]

I've added a commit to the CONTRIBUTING.md to show how to install and run locally.

@ehuss The remaining files that are whitelisted are

• svg files
• minified js files
• test input files (some in latin / Lorem Ipsum filler)

Which to me don't make sense to include into typechecking.

That leaves files like src/preprocessor/links.rs which does have a clash where it thinks typ is a typo.

I'd be happy to add a section that mentions whitelisting a word if it runs into a false positive, if people here feel that's the most appropriate way forward.

I can see this being annoying if certain coders are used to abbreviations in their style.