Send "Project Card Clicked" event to Optimizely

[ifbarrera]

📲 What

Sends the "Project Card Clicked" event to Optimizely so we can track the success of the Native Project Cards experiment.

🛠 How

• adds a call to track(eventName: "Project Card Clicked") when a project card is tapped (DiscoveryPageViewMode.swift & ThanksViewModel.swift)
• updates the German "Goal Met" string to improve readability in smaller devices, and updated relevant German screenshots

✅ Acceptance criteria

Whitelist your device into the native_project_card experiment.

• Tap on any project in Discovery. You should see the Optimizely SDK log a "Project Card Clicked" event.

[justinswart]

🚀