SerializationService

[StefanGreve]

Subtask 1

• Fix release build error: serialization and deserialization requires a JsonSerializerContext when trimming is enabled. These changes are mandatory in order to enable native AOT.

Proposed Solution (not tested)

// Users will need to specify the type to serialize or deserialize by applying
// JsonSerializableAttribute to the context class (here: ExampleModel).
[JsonSourceGenerationOptions(WriteIndented = true)]
[JsonSerializable(typeof(ExampleModel))]
internal partial class SourceGenerationContext : JsonSerializerContext
{
}

- public static ReadOnlySpan<byte> Serialize<T>(T value) where T : class
+ public static ReadOnlySpan<byte> Serialize<T, U>(T value, U context) where T : class, U : JsonSerializerContext
{
    var buffer = new ArrayBufferWriter<byte>();
    using var writer = new Utf8JsonWriter(buffer);
-   JsonSerializer.Serialize(writer, value);
+   JsonSerializer.Serialize(writer, value, typeof(T), context.Default);
    return buffer.WrittenSpan;
}

<!-- Because System.Text.Json uses reflection by default, calling a basic serialization method can break Native AOT apps, -->
<JsonSerializerIsReflectionEnabledByDefault>false<JsonSerializerIsReflectionEnabledByDefault/>

Because this change in interface is not as intuitive as before, add a minimal working example in the doc strings of the interface.

Subtask 2

• Define ISerializationService and add doc strings
• Implement SerializationService
• Implement AddSerializationService
• Publish a new version of AdvancedSystems.Core.Abstractions
• Write unit tests for SerializationService and AddSerializationService

Subtask 3

• Refactor CachingService and use SerializationService instead
• Register SerializationService in AddCachingService as scoped service
• Update unit tests (CachingServiceFixture, CachingServiceTests)