add (very) basic main menu

include/td/display/menu/CreatePartyMenu.h

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+#pragma once
+
+#include <td/display/state/MainMenuState.h>
+
+namespace td {
+
+class CreatePartyMenu : public MainMenuState::Menu {
+  public:
+	CreatePartyMenu(MainMenuState& a_MainMenu);
+	~CreatePartyMenu();
+
+	virtual void Update() override;
+};
+
+}  // namespace td

include/td/display/menu/JoinPartyMenu.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <td/display/state/MainMenuState.h>
+
+namespace td {
+
+class JoinPartyMenu : public MainMenuState::Menu {
+  public:
+	JoinPartyMenu(MainMenuState& a_MainMenu);
+	~JoinPartyMenu();
+
+	virtual void Update() override;
+};
+
+}  // namespace td

include/td/display/menu/MainMenu.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <td/display/state/MainMenuState.h>
+
+namespace td {
+
+class MainMenu : public MainMenuState::Menu {
+  public:
+	MainMenu(MainMenuState& a_MainMenu);
+	~MainMenu();
+
+	virtual void Update() override;
+};
+
+}  // namespace td

include/td/display/menu/SettingsMenu.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <td/display/state/MainMenuState.h>
+
+namespace td {
+
+class SettingsMenu : public MainMenuState::Menu {
+  public:
+	SettingsMenu(MainMenuState& a_MainMenu);
+	~SettingsMenu();
+
+	virtual void Update() override;
+};
+
+}  // namespace td