create input functionality

cli/Main.puml

@@ -0,0 +1,71 @@
+@startuml
+class Observable {
+    trigger(string event)
+    on(string event, function fun)
+}
+
+class FlippR
+
+class Game
+
+Game --* Cabinet : isAchievementStrategy ?
+Game --* State : observes >
+Game "1" --* "*" TargetStrategy
+
+class TargetStrategy
+Target "1" o-- "1" TargetStrategy : observe <
+State o-- TargetStrategy : changes <
+
+class State {
+    int ballsLeft
+    int currentBall
+}
+
+State --* BallState
+
+class BallState {
+    int score
+    int globalMultiplier
+    addScore(int points)
+}
+
+class UpperPlayFieldTimer {
+    int timeLeft = 0
+    start()
+    stop()
+}
+
+BallState --* UpperPlayFieldTimer
+class Cabinet {
+}
+
+Observable <|-- Cabinet
+Cabinet "1" --* "*" Target
+
+Observable <|-- Target
+abstract class Target {
+    int points
+    string name
+    hit()
+}
+
+class AchievementTarget {
+
+}
+
+Target *-- AchievementTarget
+Target <|-- AchievementTarget
+
+class BankTarget {
+    bool isHit
+    hit()
+    reset()
+}
+Target <|-- BankTarget
+
+class Bank
+
+Target <|-- Bank
+Bank "1" --* "1..*" BankTarget : observe >
+
+@enduml