Adds lesson 06 as well as fixes up some code inconsistencies. Adds docregions to some lessons and adds a missed step, misspellings and more to previous lessons.
PR Close#49980
Each individual lesson should have the images available in the download since a learner can start from any lesson. So, we're adding images here. Also, sync'ing styles for consistency across the lessons. This is fixing some previous commits that didn't include these changes. The goal is that for future commits we can have less changes and focused solely on that lesson
PR Close#49980
The commit enables the @typescript-eslint/quotes rule which mendates single quotes over doubles and allows template literals with backticks.
PR Close#48952
Andrew Scott