New features

### Problem

The app could have a background blur effect and another to change the background to any other, which would make things much easier for digital content creators, teachers, therapists, and the like. Background blur and a virtual background while recording would be two important filter "features," so we're not held hostage by other third-party apps.

### Proposal

Add 2 new filters.

1. Use virtual background
2. Blur background

### Prior Art (Optional)

_No response_