Refactor JS lib to use our new codegen

[svix-jplatte]

TODO:

• Export all models from src/index.ts
• Decide what we want to do about undefined fields in the response body
  Currently if the server omits a field from the response body, the json deserialization wont fail. And anyone using the js/ts lib will just get undefined if they try to access that field

Breaking changes

• endpoint.oauthUpdate and endpoint.oauthDelete are no longer generated
• Deprecated endpoint MessageAttempt.list is removed
• Generated exceptions and models are no longer exported from webhook.ts

New resources

I figured since they are publicly documented in api.svix.com/docs we should add them here.

• Environment
• Health

ref:

• https://github.com/svix/monorepo-private/issues/9685
• https://github.com/svix/monorepo-private/issues/9675
• https://github.com/svix/monorepo-private/issues/9686

[svix-mman]

Open source review

Dev dependency

Replace

• "@typescript-eslint/eslint-plugin": "^4.15.2"
• "@typescript-eslint/parser": "^4.15.2"
• "@typescript-eslint/typescript-estree": "^4.15.2"

With "typescript-eslint": "^8.24.0"

[svix-mman]

Open source review

Dev dependency

https://github.com/httptoolkit/mockttp

• Apache-2.0 license

Used to test that out going requests are de/serialized correctly