Attempt to really really stop the service when logging stops, using stopSelf().

Apparently using stopForeground isn't enough.  That just removes the foreground state.
To stop the service, it's stopSelf() that needs to be used.
https://developer.android.com/reference/android/app/Service#stopForeground(int)

Issue #933

Author: mendhak

gpslogger/build.gradle

@@ -45,7 +45,7 @@ android {
         targetSdkVersion 30
 
         versionCode 122
-        versionName "122-rc1"
+        versionName "122-rc2"
     }
 
     buildTypes {

gpslogger/src/main/java/com/mendhak/gpslogger/GpsLoggingService.java

@@ -457,6 +457,7 @@ public void stopLogging() {
         session.setCurrentLocationInfo(null);
         session.setSinglePointMode(false);
         stopForeground(true);
+        stopSelf();
 
         removeNotification();
         stopAlarm();