Implement user input handling and refine drawing logic

draw.h

@@ -41,6 +41,14 @@ void drawTitle(char* title);
  */
 void drawEmptyLines(int amount);
 
+/**
+ * @brief gets Userinput and puts it in the input var
+ *
+ * @param[out] output
+ * @param[in] displayText
+ */
+void getUserInput(char* output, char* displayText);
+
 char** splitByNewLine(char *str, int *lineCount);
 
 #endif