implement toggle/number/text values

Signed-off-by: Folling <mail@folling.io>

src/values/text_value.hpp

@@ -2,7 +2,32 @@
 
 #include <string>
 
+#include <values/value.hpp>
+
 /// \private
-struct IkarusTextValue {
-    std::string value;
+struct IkarusTextValue final : IkarusValue {
+public:
+    explicit IkarusTextValue(std::string value):
+        IkarusValue{this},
+        _value(std::move(value)) {}
+
+    IkarusTextValue(IkarusTextValue const&) = default;
+    IkarusTextValue(IkarusTextValue&&) noexcept = default;
+
+    IkarusTextValue& operator=(IkarusTextValue const&) = default;
+    IkarusTextValue& operator=(IkarusTextValue&&) noexcept = default;
+
+    ~IkarusTextValue() override = default;
+
+public:
+    [[nodiscard]] std::string_view get_value() const noexcept {
+        return _value;
+    }
+
+    void set_value(std::string_view value) {
+        _value = value;
+    }
+
+private:
+    std::string _value;
 };