P1) Update typescript client to remove warnings

[RichardDzurus]

solves issue

• uses ts-json-schema-generator instead of no longer supported typescript-json-schema so there is a little logic rewrite
• upgraded eslint version and migrated config

Note: I tried deploying functions to dev using this version different kinds of types and it seemed fine but @aarongoin you might be more familiar with some edge cases as you worked with schemas in other parts - if you got few extra minutes could you try maybe I missed something

[aarongoin]

So far this okay to me. Will pull this branch and test more on Tuesday. 👍

[aarongoin]

I say lets merge this one. But heads up you'll need to update to use a different version as we're already on 0.23.17