Implement production vertical slice foundation

game/presentation/pause/pause_menu.gd

@@ -0,0 +1,18 @@
+class_name PauseMenu
+extends Control
+
+signal resume_requested
+signal controls_requested
+signal abandon_requested
+signal main_menu_requested
+signal quit_requested
+
+
+func _ready() -> void:
+	process_mode = Node.PROCESS_MODE_ALWAYS
+	%ResumeButton.pressed.connect(func() -> void: resume_requested.emit())
+	%ControlsButton.pressed.connect(func() -> void: controls_requested.emit())
+	%AbandonButton.pressed.connect(func() -> void: abandon_requested.emit())
+	%MainMenuButton.pressed.connect(func() -> void: main_menu_requested.emit())
+	%QuitButton.pressed.connect(func() -> void: quit_requested.emit())
+	%ResumeButton.grab_focus()