Plugin: modify CPlugin

Author: KangLin

Src/Plugin.cpp

@@ -68,7 +68,7 @@ const QString CPlugin::TypeName(const TYPE t) const
     return QString();
 }
 
-const QString CPlugin::Id()
+const QString CPlugin::Id() const
 {
     return QString::number((int)Type()) + ":" + Protocol() + ":" + Name();
 }

Src/Plugin.h

@@ -33,7 +33,7 @@ class PLUGIN_EXPORT CPlugin : public QObject
     [[nodiscard]] virtual const QString TypeName(const TYPE t) const;
     /// \~chinese 标识。默认： Type() + ":" + Protocol() + ":" + Name()
     /// \~english ID. Default: Type() + ":" + Protocol() + ":" + Name()
-    [[nodiscard]] virtual const QString Id();
+    [[nodiscard]] virtual const QString Id() const;
     /// \~chinese 协议
     /// \~english Plugin Protocol
     [[nodiscard]] virtual const QString Protocol() const = 0;