feat: default dialer prompt screen (#56)

Reviewed-on: #56
Co-authored-by: Florian Griffon <florian.griffon@epitech.eu>
Co-committed-by: Florian Griffon <florian.griffon@epitech.eu>

dialer/android/app/src/main/kotlin/com/icing/dialer/activities/MainActivity.kt

@@ -208,6 +208,15 @@ class MainActivity : FlutterActivity() {
                             result.error("INVALID_ARGUMENT", "Digit is null", null)
                         }
                     }
+                    "isDefaultDialer" -> {
+                        val isDefault = isDefaultDialer()
+                        Log.d(TAG, "isDefaultDialer called, returning: $isDefault")
+                        result.success(isDefault)
+                    }
+                    "requestDefaultDialer" -> {
+                        checkAndRequestDefaultDialer()
+                        result.success(true)
+                    }
                     else -> result.notImplemented()
                 }
             }