Build: Use GitHub Actions for CI/CD

[keithamus]

This uses GitHub Actions with the new CI/CD features to test and deploy chai-http to npm

It attempts to mimic the existing travis.yml as closely as possible.

To clarify where the tokens exist; they're in the settings page for this repo under "Security Tokens". NPM_TOKEN exists in there, but github_token is managed automatically by GitHub Actions.

[austince]

I like the idea of migrating from travis to here! Should we merge #252 and then update this PR to run semantic-release instead of the publish-npm stage? #252 still needs some travis-specific updates to actually deploy.

[keithamus]

@austince yes let's merge #252 first.

[keithamus]

This passes the Actions CI. Travis is failing as it is trying to support older versions of Node, but it also passes the more recent builds.

I'd say this is good to go, maybe with a ✅ from @chaijs/core?

[austince]

Should we remove the travis config or drop the earily node versions is as well in this commit? We'll have to at least disable publishing I think.

[austince]

Looks great!

[austince]

@chaijs/core sorry to ping you all, but does anyone have a chance to take a look at this? There's continued interest in adding PRs (#259) and just hoping we can get this in before blocking any of them. Thanks!

[keithamus]

I'll just go ahead and merge this one 😆