Track mode (Tracker issue)

[teolemon]

Who for

• Users who'd like to track the impact on food on their health
• Users who'd like to track the impact on food on their environment
• Users who'd like to track the food they have

What

- [ ] https://github.com/openfoodfacts/smooth-app/issues/527
- [ ] https://github.com/openfoodfacts/smooth-app/issues/2483
- [x] https://github.com/openfoodfacts/smooth-app/issues/1073
- [ ] https://github.com/openfoodfacts/smooth-app/issues/3390
- [ ] Receipt tracking efforts
  - [ ] https://github.com/openreceipts/openreceipts-server (A 2 day effort including @teolemon, during a hackathon in Switzerland)
  - [ ] zprice
- [ ] https://github.com/openfoodfacts/smooth-app/issues/3830
- [ ] https://github.com/openfoodfacts/smooth-app/issues/3831
- [ ] https://github.com/openfoodfacts/smooth-app/issues/2627

Why

• Tracking is a motivation for change
• Tracking can be purely useful for many things

Part of

• #525