feat: [WIP] Integrate Matomo analytics tracking

[philippeauriach]

PR Description

Type of Changes

• New feature

⚠️ Nothing is operationel yet, as we don't have the Matomo server for now

Proposed changes

• integrates anonymous Matomo analytics tracking
• ask the user at first open if he agreed to be tracked (default to false)
• privacy screen in setting allowing to enable / disable tracking
• in the new priivacy screen, allow disabling crash reporting

views tracked :

• scanner view
  products/edit
• events tracked :
  • scanner scanned (with barcode as event name)
  • scanner result card swiped up (with barcode as event name)
• allergen alert added (with allergen code as event name)
• ingredient-analysis
  • enabled (with name of ingredient analysis)
  • disabled (with name of ingredient analysis)
• user-account
  • login
  • logout
  • login prompt
    • name: robotoff
  • logged-in-after-prompt
    • name: robotoff
• products :
  • edited (saved a product) (with barcode as event name)
  • edited-nutrition-facts (saved a product’s nutrition facts table) (with barcode as event name)
  • edited-ingredients (saved a product’s ingredients) (with barcode as event name)
  • edited-ingredients-picture (added a product’s ingredients picture) (with barcode as event name)

Screenshots

After

[stephanegigandet]

Looks great :)

[philippeauriach]

We still miss the matomo server url. @teolemon what's the take on this?

[teolemon]

@cquest do you have some info for @philippeauriach regarding the matomo path for the app ? Any ETA ?

[teolemon]

@philippeauriach I reckon clicking that button is safe ?

[philippeauriach]

@philippeauriach I reckon clicking that button is safe ?

I like this button! Should be yes, a conflictless merge theorically works anytime.

[teolemon]

Like the Cavalry, we arrive late, but we now have a Matomo install : https://analytics.openfoodfacts.org/

[teolemon]

Update branch attempt failed
Merge conflict between head and base.

[teolemon]

openfoodfacts/openfoodfacts-infrastructure#24

[teolemon]

CodeFactor found multiple issues last seen at f844be1:

Lines should not have trailing whitespace.

• Sources\ViewControllers\Products\Add\ProductAddViewController.swift:359

Complex Method

• Sources\ViewControllers\Products\Detail\ProductDetailViewController.swift:248

TODOs should be resolved (config).

• Sources\Controllers\AnalyticsManager.swift:16

Prefer at least one space after slashes for comments.

• Sources\Controllers\AnalyticsManager.swift:16

[teolemon]

Thank you @philippeauriach
Given the merge conflict, and the fact that we moved to flutter, I'm closing this PR.