Fix vertical accuracy. (#116)

* Send 0 instead of null for vertical accuracy if we don't have real value.

* Remove nullable fields if they aren't nullable.

app/src/main/java/io/homeassistant/companion/android/background/LocationBroadcastReceiver.kt

@@ -99,7 +99,7 @@ class LocationBroadcastReceiver : BroadcastReceiver() {
                 it.speed.toInt(),
                 it.altitude.toInt(),
                 it.bearing.toInt(),
-                if (Build.VERSION.SDK_INT >= 26) it.verticalAccuracyMeters.toInt() else null
+                if (Build.VERSION.SDK_INT >= 26) it.verticalAccuracyMeters.toInt() else 0
             )
 
             mainScope.launch {

data/src/main/java/io/homeassistant/companion/android/data/integration/UpdateLocationRequest.kt

@@ -8,5 +8,5 @@ data class UpdateLocationRequest(
     val speed: Int,
     val altitude: Int,
     val course: Int,
-    val verticalAccuracy: Int?
+    val verticalAccuracy: Int
 )

domain/src/main/java/io/homeassistant/companion/android/domain/integration/UpdateLocation.kt

@@ -8,5 +8,5 @@ data class UpdateLocation(
     val speed: Int,
     val altitude: Int,
     val course: Int,
-    val verticalAccuracy: Int?
+    val verticalAccuracy: Int
 )