Feat: Restuctured GraphQL Queries and added Backend call service into client. And regerated GraphQL client classes

WotBlitzStatisticsPro.Blazor/graphql/schema.extensions.graphql

@@ -0,0 +1,13 @@
+scalar _KeyFieldSet
+
+directive @key(fields: _KeyFieldSet!) on SCHEMA | OBJECT
+
+directive @serializationType(name: String!) on SCALAR
+
+directive @runtimeType(name: String!) on SCALAR
+
+directive @enumValue(value: String!) on ENUM_VALUE
+
+directive @rename(name: String!) on INPUT_FIELD_DEFINITION | INPUT_OBJECT | ENUM | ENUM_VALUE
+
+extend schema @key(fields: "id")