Update developer onboarding information in the wiki

[c-fuchs]

Overview

Update the Shared Housing wiki page with developer onboarding information.

Action Items

In the Shared Housing Wiki page

• [ ] Review the HfLA Website team's developer onboarding page (also linked in the wiki page)
• [ ] Fill in with the information relevant to the Shared Housing project
• [ ] Add anything else that's essential for new Dev team members to know

Resources/Instructions

HfLA website Dev onboarding page Shared Housing Wiki PM page

Target page: Shared Housing Wiki Dev page