Add .toString() to Script class

[erenkarakal]

Description

Adds a .toString() method to the Script class.

Example outputs:

abc.sk
folder/script.sk

---

Target Minecraft Versions: any Requirements: none Related Issues: #5834

[sovdeeth]

to sum up conversation on discord, I think the toString should hold more information about the Script object than just its file name, perhaps using the common structure of Script{field = value}

[TheLimeGlass]

I don't really like this being the config file name.

Do you have an alternative suggestion or you don't like the pull request. This is blocking.