feat: add initial architecture for AI chat aside

[arslanashraf7]

What are the relevant tickets?

Related to/Part of/Partial implementation of https://github.com/mitodl/hq/issues/6004

Description (What does it do?)

• Adds the initial experiments infrastructure for the AI chatbot in open edx

Screenshots (if appropriate):

NOTE: These screenshots are just to give you and idea, I still need to add some buttons and fields here and there

Studio test display

Student/Learner View

How can this be tested?

• Install this package in Open edX LMS & CMS
• Enable xBlock configurations in CMS <STUDIO_URL>/admin/xblock_config/studioconfig/
• Enable xBlock asides in LMS <LMS_URL>/admin/lms_xblock/xblockasidesconfig/
• Reload both LMS/CMS
• Go to CMS, Add any mcq problem and you should see a a couple of text edit field button at the bottom
• Got to LMS and you should see a Hello World button

Additional Context

This is just the basic architecture for the aside we are going to create to add chat support in xBlocks

[asadali145]

LGTM!