Integrate PowerSync to the project

[coaguila]

Description

Integrate PowerSync to the profiles to try to implement an offline mode that handles the syncing a local SQLite db and a the cloud-based Postgres SQL Supabase db.

Done

Specific, measurable criteria to confirm the task is complete.

• Must not change anything in the logic and just be another layer to communicate with the supabase db.
• Must keep the quality of previous supabase code and not add complexity of any code dependant on it.

Steps to Completion

Break down the task into actionable steps. Make sure those steps are separable so that you can easily create subtasks/subissues from these:

• Create new PowerSync UserModel class
• Implement new class in UserViewModel
• Test Both Classes