feat(farmer-activity): photo storage

[chrismclarke]

Is your feature request related to a problem? Please describe. Following work in #282, it would be good to have a system whereby photos a user has taken are stored within the app and available after app restart.

Describe the solution you'd like

1. Move photo-input code to the libs\shared\src\features folder (as will be a shared feature, consisting of both components and service)
2. Create a database schema to store photos. Likely this should include an id, the photo data, a timestamp, and optional custom_meta fields.
3. Update component to retrieve photo from database as required and display

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context

• Example schema used for feature can be found in: libs\shared\src\features\video-player
• When storing the photo it might be useful to ask capacitor to return as binary object and use the existing libs\shared\src\services\core\db_v2\db-attachment.service.ts to handle storing.
• Camera API docs: https://capacitorjs.com/docs/apis/camera

Additionally, for use in debugging you may want to create a route for /photos and display components to show a list of all available photos in db. The easiest way to do this would be to create the photo-list component in the same feature folder and register within the extension app apps\picsa-apps\extension-app\src\app\app-routing.module.ts

 {
    path: 'photos',
    loadComponent: () =>
      import('@picsa/shared/features/photo-input/photo-list.component').then((mod) => mod.PicsaPhotoListComponent),
  },

(the loadComponent syntax can be used to display a route for any component that has been setup as a standalone component - https://blog.angular-university.io/angular-standalone-components/)