Allow passing in a generic type for the client

[razor-x]

• Consumers who use seam.client would like to use https://www.npmjs.com/package/typed-axios-instance
• Supporting typed-axios-instance directly in this library is out of scope.
• Instead, the SeamHttp class could provide setting the client type via 'fromClient`, e.g.,

import { SeamHttp } from '@seamapi/http'
import type { TypedAxios } from 'typed-axios-instance'

import type { Routes } from './routes.js'

const seam = new Seam() // create a new instance normally

type Client = TypedAxios<Routes>

const seamWithTypedRoutes = Seam.fromClient<Client>(seam.client)

[razor-x]

Reviewing this again, I don't feel the generic parameter is the correct solution. We should just be able to respect the type of the client passed to fromClient, e.g., does this work?

import { SeamHttp } from '@seamapi/http'
import type { TypedAxios } from 'typed-axios-instance'

import type { Routes } from './routes.js'

const seam = new Seam() // create a new instance normally

type Client = TypedAxios<Routes>

const seamWithTypedRoutes = Seam.fromClient(seam.client as Client)