Port application demo frontends to TypeScript

[Twey]

Currently, testing of our application demo frontends is a rather manual experience. We would like to port them to TypeScript, with type-checking of the GraphQL schemas, to increase development velocity on them and ease some of the burden of manually updating them when our backends change.

[gaupoit]

Could you give me the link to code base of application demo's frontends?

[afck]

https://github.com/linera-io/linera-protocol/tree/main/examples/counter/web-frontend https://github.com/linera-io/linera-protocol/tree/main/examples/fungible/web-frontend https://github.com/linera-io/linera-protocol/tree/main/examples/non-fungible/web-frontend