Split AuthService/Server

some refactoring
fix some stuff
add http context accessor
configure metrics as well
commit 713d054ccb965f7adb8eafa6e3fb52853a1e6dd2 (partial, Docker only)

MareSynchronosServer/MareSynchronosAuthService/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}