Update to API 34

[GrazianoCapelli]

Update to API 34 is mandatory for Google starting from 31 August. https://developer.android.com/about/versions/14/behavior-changes-14

Some checks must be done due to some changes in specifications:

• [x] Update API declaration
• [x] New restrictions to implicit and pending intents
• [x] Runtime-registered broadcasts receivers must specify export behavior
• [x] Declare new permission to use foreground service types
• [x] New Location Permission Constrains to start Foreground Services

[GrazianoCapelli]

Implicit, pending intents, and broadcast receivers checked. Everything works fine.