Add auth support (#21)

* Updates

* Update

* Update

* Update

* Update

* Yarn sometimes prefers npmrc, so use same token

* Description

* Update readme

* Feedback

* Add type

* new toolkit and scoped registries

* npmrc in RUNNER_TEMP

* Dont always auth

* Try exporting blank token

* Get auth working for now pending runner changes

* Fix string interpolation for auth token.

* Don't export both userconfigs

* Update authutil.js

* Add single quotes for authString

* Fix the registry string.

* Use userconfig and append trailing slash

* Keep in root of repo

* Try just adding auth token

* Remove auth token

* Try changes again

* Add tests

* Npm and GPR samples

* Add types

node_modules/@octokit/rest/lib/parse-client-options.js

@@ -0,0 +1,64 @@
+module.exports = parseOptions
+
+const { Deprecation } = require('deprecation')
+const getUserAgent = require('universal-user-agent')
+const once = require('once')
+
+const pkg = require('../package.json')
+
+const deprecateOptionsTimeout = once((log, deprecation) => log.warn(deprecation))
+const deprecateOptionsAgent = once((log, deprecation) => log.warn(deprecation))
+const deprecateOptionsHeaders = once((log, deprecation) => log.warn(deprecation))
+
+function parseOptions (options, log, hook) {
+  if (options.headers) {
+    options.headers = Object.keys(options.headers).reduce((newObj, key) => {
+      newObj[key.toLowerCase()] = options.headers[key]
+      return newObj
+    }, {})
+  }
+
+  const clientDefaults = {
+    headers: options.headers || {},
+    request: options.request || {},
+    mediaType: {
+      previews: [],
+      format: ''
+    }
+  }
+
+  if (options.baseUrl) {
+    clientDefaults.baseUrl = options.baseUrl
+  }
+
+  if (options.userAgent) {
+    clientDefaults.headers['user-agent'] = options.userAgent
+  }
+
+  if (options.previews) {
+    clientDefaults.mediaType.previews = options.previews
+  }
+
+  if (options.timeout) {
+    deprecateOptionsTimeout(log, new Deprecation('[@octokit/rest] new Octokit({timeout}) is deprecated. Use {request: {timeout}} instead. See https://github.com/octokit/request.js#request'))
+    clientDefaults.request.timeout = options.timeout
+  }
+
+  if (options.agent) {
+    deprecateOptionsAgent(log, new Deprecation('[@octokit/rest] new Octokit({agent}) is deprecated. Use {request: {agent}} instead. See https://github.com/octokit/request.js#request'))
+    clientDefaults.request.agent = options.agent
+  }
+
+  if (options.headers) {
+    deprecateOptionsHeaders(log, new Deprecation('[@octokit/rest] new Octokit({headers}) is deprecated. Use {userAgent, previews} instead. See https://github.com/octokit/request.js#request'))
+  }
+
+  const userAgentOption = clientDefaults.headers['user-agent']
+  const defaultUserAgent = `octokit.js/${pkg.version} ${getUserAgent()}`
+
+  clientDefaults.headers['user-agent'] = [userAgentOption, defaultUserAgent].filter(Boolean).join(' ')
+
+  clientDefaults.request.hook = hook.bind(null, 'request')
+
+  return clientDefaults
+}