Still working on getting client credential flow complete, most of the request works but still working on generating the JWT.

IdentityShroud.Core/DTO/OpenId/GrantTypes.cs

@@ -0,0 +1,9 @@
+using System.Text.Json.Serialization;
+
+namespace IdentityShroud.Core.DTO.OpenId;
+
+public enum GrantTypes
+{
+    [JsonStringEnumMemberName("client_credentials")]
+    ClientCredentials
+}

IdentityShroud.Core/DTO/OpenId/TokenResponse.cs

@@ -0,0 +1,19 @@
+using System.Text.Json.Serialization;
+
+namespace IdentityShroud.Core.Services.OpenId;
+
+public class TokenResponse
+{
+    [JsonPropertyName("access_token")] 
+    public required string AccessToken { get; set; }
+    
+    [JsonPropertyName("token_type")]
+    public required  string TokenType { get; set; }
+    
+    [JsonPropertyName("expires_in")]
+    public int? ExpiresIn { get; set; }
+    
+    [JsonPropertyName("refresh_token")]
+    public string? RefreshToken { get; set; }
+    
+}