Add example usage of EnsureBot to the Demo Plugin

Description

The existing implementation would be replaced to use EnsureBot with options. This is a follow up on .

QA Test Steps

See linked PR for discussion on test steps.

Mana

None

Assignee

Mattermost Community

QA Assignee

Prapti Shrestha

Reporter

Ben Schumacher

Epic Link

None

Fix versions

Mattermost Team

Toolkit

Sprint

None

QA Testing Areas

Plugins

Components

None
Configure