670 use typed responses for api calls

[zmjohnso]

The goal of this PR is to begin addressing issue #670. As an example, I added a typed API response to getWalletAll. As the issue states, this should improve the developer experience by moving the body parsing into a single location and give some type completion when making this call in the future. If this still seems like a good direction to go in, I will start working on adding typed responses for the rest of the calls in JmWalletApi.ts.

[theborakompanioni]

Hey @zmjohnso! Like the direction this is going.
Hope I have time to think about it a bit and provide feedback.

e.g. what do you think about generating the schema with npx openapi-typescript https://joinmarket-org.github.io/joinmarket-clientserver/api/wallet-rpc.yaml -o ./src/libs/JmWalletApi.d.ts?

[zmjohnso]

Hey @zmjohnso! Like the direction this is going. Hope I have time to think about it a bit and provide feedback.

e.g. what do you think about generating the schema with npx openapi-typescript https://joinmarket-org.github.io/joinmarket-clientserver/api/wallet-rpc.yaml -o ./src/libs/JmWalletApi.d.ts?

Oh, yes; thanks for sharing that! I think generating the types is usually better and should also save some time. I added the types in and I'm working on updating some more endpoints. I'll push some more code in the next few for you to take a peak.