Add HttpResponseTooManyRequests and isHttpResponseTooManyRequests

[matt-harvey]

Issue

Fixes #664

Solution and steps

Class and boolean method for 429 HTTP response now provided alongside similar existing class/method pairs.

Checklist

• Add/update/check docs (code comments and docs/ folder).
• Add/update/check tests.
• Update/check the cli generators.

I had trouble generating the documentation. npm run docs complained about a lack of various @types packages. A clean npm i did not fix the issue. I had followed the various steps in https://github.com/FoalTS/foal/blob/master/.github/CONTRIBUTING.MD before doing the work.

[LoicPoullain]

Thks 👍

[LoicPoullain]

I had trouble generating the documentation. npm run docs complained about a lack of various @types packages. A clean npm i did not fix the issue. I had followed the various steps in https://github.com/FoalTS/foal/blob/master/.github/CONTRIBUTING.MD before doing the work.

Yes, I also have problems with this command. I must confess that I haven't updated the API reference for several minor versions because of that. The problem seems to be linked to the noImplicitAny compiler option in tsconfig.json. When set to false the generation works.

EDIT: I opened an issue #710