Setup basic GUI and scanner selection

scripts/gui/scanner_modes.gd

@@ -0,0 +1,14 @@
+extends Control
+
+signal scanner_selected
+
+func _on_scanner_select_item_selected(index):
+	var scannerType : Scanners.Type
+	
+	match index:
+		0: scannerType = Scanners.Type.NoScanner
+		1: scannerType = Scanners.Type.Water
+		2: scannerType = Scanners.Type.Fertility
+		3: scannerType = Scanners.Type.Presence
+	
+	emit_signal("scanner_selected", scannerType)