add trackers support (#720)

* add trackers support

* Cleanup Tracker Code

* Add GraphQL support for Tracking

* Fix lint and deprecation errors

* remove password from logs

* Fixes after merge

* Disable tracking for now

* More disabled

---------

Co-authored-by: Syer10 <syer10@users.noreply.github.com>

server/src/main/kotlin/eu/kanade/tachiyomi/network/OkHttpExtensions.kt

@@ -9,6 +9,7 @@ import kotlinx.serialization.json.okio.decodeFromBufferedSource
 import kotlinx.serialization.serializer
 import okhttp3.Call
 import okhttp3.Callback
+import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.OkHttpClient
 import okhttp3.Request
 import okhttp3.Response
@@ -19,6 +20,8 @@ import java.io.IOException
 import java.util.concurrent.atomic.AtomicBoolean
 import kotlin.coroutines.resumeWithException
 
+val jsonMime = "application/json; charset=utf-8".toMediaType()
+
 fun Call.asObservable(): Observable<Response> {
     return Observable.unsafeCreate { subscriber ->
         // Since Call is a one-shot type, clone it for each new subscriber.