Postnl support (#178)

* Add Rfc3339LocalDateTimeJsonAdapter

* Add initial support for PostNL

* postnl: Correct some status codes

* Add postnl codeowners

Author: MaeIsBad

.github/CODEOWNERS

@@ -0,0 +1 @@
+/app/src/main/java/dev/itsvic/parceltracker/api/PostNLDeliveryService.kt @MaeIsBad

app/src/main/java/dev/itsvic/parceltracker/api/Core.kt

@@ -43,6 +43,7 @@ enum class Service {
   PACKETA,
   POLISH_POST,
   POSTE_ITALIANE,
+  POST_NL,
   SAMEDAY_BG,
   SAMEDAY_HU,
   SAMEDAY_RO,
@@ -87,6 +88,7 @@ fun getDeliveryService(service: Service): DeliveryService? {
     Service.PACKETA -> PacketaDeliveryService
     Service.POLISH_POST -> PolishPostDeliveryService
     Service.POSTE_ITALIANE -> PosteItalianeDeliveryService
+    Service.POST_NL -> PostNLDeliveryService
     Service.SAMEDAY_BG -> SamedayBulgariaDeliveryService
     Service.SAMEDAY_HU -> SamedayHungaryDeliveryService
     Service.SAMEDAY_RO -> SamedayRomaniaDeliveryService