11850 Lab 4 updates Finance (#589)

* My changes1

* Json challenge

* New Json handson

* Complete

* Business Requirements updates

* Manifest

* Feedback updates

* Editing-out name

* Updating Dom's name

* updated screenshots for Dom

* New Manifest for paramount

* Removed est. time in Intro

* Adding Feature PM's

* updated introduction.md

* Added par file (zip file of code)

* adding videos

* #4195

Created new folders for Retail and Healthcare

* WMS: 11850

Updating lab 1 task 3 markdown

* 11850: Finance lab 4 update

* Lab 4 RAG Updated

* 11850 Lab 4 updates

* Fixed RAG code Finance

* 11850 Finance Lab1 screenshots

* Delete Lab4_Finance file

Author: lfoinding