ui starting, menu screen, ingame help

engine/screens/sample.go

@@ -0,0 +1,11 @@
+package screens
+
+type SampleScreen struct {
+
+}
+
+func (ss *SampleScreen) UseEcs() bool             {return false}
+func (ss *SampleScreen) Enter()                   {}
+func (ss *SampleScreen) HandleInput(input string) {}
+func (ss *SampleScreen) Exit()                    {}
+func (ss *SampleScreen) Render()                  {}