Add createClient (#61)

* Initial commit

* remove comment

* export obj

* fix export

* add to api.md

* fix old refs to nmp

src/createClient.js

@@ -0,0 +1,45 @@
+const { Client } = require('./client')
+const assert = require('assert')
+
+module.exports = { createClient }
+
+/** @param {{ version?: number, hostname: string, port?: number }} options */
+function createClient (options) {
+  assert(options && options.hostname)
+  const client = new Client({ port: 19132, ...options })
+
+  client.once('resource_packs_info', (packet) => {
+    handleResourcePackInfo(client)
+    disableClientCache(client)
+    handleRenderDistance(client)
+    handleTickSync(client)
+  })
+
+  return client
+}
+
+function handleResourcePackInfo (client) {
+  client.write('resource_pack_client_response', {
+    response_status: 'completed',
+    resourcepackids: []
+  })
+
+  client.once('resource_pack_stack', (stack) => {
+    client.write('resource_pack_client_response', {
+      response_status: 'completed',
+      resourcepackids: []
+    })
+  })
+}
+
+function handleRenderDistance (client) {
+  client.queue('request_chunk_radius', { chunk_radius: 1 })
+}
+
+function disableClientCache (client) {
+  client.queue('client_cache_status', { enabled: false })
+}
+
+function handleTickSync (client) {
+  client.queue('tick_sync', { request_time: BigInt(Date.now()), response_time: 0n })
+}