default_permission props on create/modify appliaction command rest entities

src/Discord.Net.Rest/API/Rest/CreateApplicationCommandParams.cs

@@ -19,6 +19,9 @@ namespace Discord.API.Rest
         [JsonProperty("options")]
         public Optional<ApplicationCommandOption[]> Options { get; set; }
 
+        [JsonProperty("default_permission")]
+        public Optional<bool> DefaultPermission { get; set; }
+
         public CreateApplicationCommandParams() { }
         public CreateApplicationCommandParams(string name, string description, ApplicationCommandOption[] options = null)
         {

src/Discord.Net.Rest/API/Rest/ModifyApplicationCommandParams.cs

@@ -17,5 +17,8 @@ namespace Discord.API.Rest
 
         [JsonProperty("options")]
         public Optional<ApplicationCommandOption[]> Options { get; set; }
+
+        [JsonProperty("default_permission")]
+        public Optional<bool> DefaultPermission { get; set; }
     }
 }