feat: node support in codegen server

[tjjfvi]

Resolves #719

// package.json
{
  "type": "module",
  "dependencies": {
    "@capi/westend-dev": "http://localhost:4646/frame/dev/westend/@latest/pkg.tar",
    "capi": "file:../capi/target/npm/capi-v0.1.0.tgz"
  }
}

// transfer.ts
import { alice, bob } from "capi";
import { Balances } from "@capi/westend-dev";
import { signature } from "capi/patterns/signature/polkadot";

const result = await Balances
  .transfer({
    value: 12345n,
    dest: bob.address,
  })
  .signed(signature({ sender: alice }))
  .sent()
  .dbgStatus()
  .finalizedEvents()
  .run();

console.log(result);
//          ^? - const result: Event<EventsChain<EventsChain<WestendDev>>>[]

// npx ts-node-esm transfer.ts
ready
{
  inBlock: '0x54fe90dc4c91d1770ecfec14b632a3d41d0348921cbcd058d2d271008e1952fa'
}
{
  finalized: '0x54fe90dc4c91d1770ecfec14b632a3d41d0348921cbcd058d2d271008e1952fa'
}
[
  {
    phase: { type: 'ApplyExtrinsic', value: 2 },
    event: { type: 'Balances', value: [Object] },
    topics: []
  },
  {
    phase: { type: 'ApplyExtrinsic', value: 2 },
    event: { type: 'Balances', value: [Object] },
    topics: []
  },
  {
    phase: { type: 'ApplyExtrinsic', value: 2 },
    event: { type: 'Balances', value: [Object] },
    topics: []
  },
  {
    phase: { type: 'ApplyExtrinsic', value: 2 },
    event: { type: 'TransactionPayment', value: [Object] },
    topics: []
  },
  {
    phase: { type: 'ApplyExtrinsic', value: 2 },
    event: { type: 'System', value: [Object] },
    topics: []
  }
]

[harrysolovay]

LGTM