Feature/simpl 10168

this is the script that should write in changelog everytime we merge something in main. i still need to talk with someone from devops in order to provide me a general token, and write the documentation about how the commit message should look like. i also let the changelog file in order to allow you to see how the messages looks like it take the task number from branch name, the date, the version of the file and mr code ( i m not really sure that we need all of them for the end user to see them, but i thought it they might be useful )