#3 add find method to ast interface (also add impl. in adjacency list)
#1 add new enum command types to Command struct, add name methode to Graph interface whiche identifies the graph (equals to the function name), changed arg field in Command struct to pointer (cause of errors)
#1 create example rail prog with representation as csv file to test the deserialization
#1 create new deserialization method in main file to develope and test the deserialization. Reads first function, with nodes (his ids and commands)