feat: Make datastore async/await. (#1666)

feat: Make datastore async/await.
feat: Make robot.run async/await.
feat: throw error instead of calling process.exit in try/catch. Let the process fail on its own.

fix: Shell adapter wasn't closing the Readline stream properly. It was causing test scenarios to hang.
fix: adapter.emote had a typo
fix: call removeAllListeners in close method.
fix: Response.play() wasn't working.
fix: argument being sent to the catchAll callback was not correct. It's supposed to be a CatchAllMessage type.

chore: Add @deprecated for Brain wrapper  methods in Adapter
chore: Remove is-circular
chore: Replace mocha with Node's Test Runner
chore: Remove chai, sinon and sinon-chai

BREAKING CHANGE: Updating datastore to async/await API.
BREAKING CHANGE: Bump Node support to v18
BREAKING CHANGE: Making robot.run async/await is an API change.

Get tests working with node v18.17.1.
It's fine if there's not a history file for the shell adapter.
fixed this[#rl].close is not a function in pipeline.
Possible race condition between loading the readline interface and call to close happening close together.

.github/workflows/nodejs-ubuntu.yml

@@ -15,7 +15,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [16.x, 18.x, latest]
+        node-version: [18.x, latest]
 
     steps:
     - uses: actions/checkout@v3

bin/hubot.js

@@ -153,5 +153,5 @@ function loadExternalScripts () {
 
   robot.adapter.once('connected', loadScripts)
 
-  robot.run()
+  await robot.run()
 })()