basic permission handling + use for edit/delete

discord/permissions.cpp

@@ -0,0 +1,12 @@
+#include "permissions.hpp"
+
+void from_json(const nlohmann::json &j, PermissionOverwrite &m) {
+    JS_D("id", m.ID);
+    std::string tmp;
+    JS_D("type", tmp);
+    m.ID = tmp == "role" ? PermissionOverwrite::ROLE : PermissionOverwrite::MEMBER;
+    JS_D("allow_new", tmp);
+    m.Allow = static_cast<Permission>(std::stoull(tmp));
+    JS_D("deny_new", tmp);
+    m.Deny = static_cast<Permission>(std::stoull(tmp));
+}