initial commit; very basic REST client

Foxcord/Serialization/JsonSerializer.cs

@@ -0,0 +1,27 @@
+using System.Net.Http.Json;
+using System.Text.Json;
+using DefaultJsonSerializer = System.Text.Json.JsonSerializer;
+
+namespace Foxcord.Serialization;
+
+public static class JsonSerializer
+{
+    private static readonly JsonSerializerOptions Options = new()
+    {
+        PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower,
+        PropertyNameCaseInsensitive = true
+    };
+
+    public static string Serialize(object? value) => DefaultJsonSerializer.Serialize(value, Options);
+
+    public static byte[] SerializeToUtf8Bytes(object? value) =>
+        DefaultJsonSerializer.SerializeToUtf8Bytes(value, Options);
+
+    public static TValue? Deserialize<TValue>(string json) => DefaultJsonSerializer.Deserialize<TValue>(json, Options);
+
+    public static ValueTask<TValue?> DeserializeAsync<TValue>(Stream json) =>
+        DefaultJsonSerializer.DeserializeAsync<TValue>(json, Options);
+
+    public static Task<TValue?> ReadAsJsonAsync<TValue>(this HttpContent content) =>
+        content.ReadFromJsonAsync<TValue>(Options);
+}