Make item filters cleaner to modify

[cakarlen]

Is it possible to mimic how MapAssist works by using a modified version of ItemFilter.yaml in this project? It may be a bit easier to modify your item filters using this method.

https://github.com/OneXDeveloper/MapAssist/blob/89b6ebf8f52eaf3b9184309c7b698ebf953602aa/ItemFilter.yaml

[soarqin]

I don't want to import yaml parsing libraries for this (rapidyaml or yaml-cpp).
So there are 2 solutions:

1. a converter
2. an editor

it would be good to have pull requests or 3rd party tools for doing any of these, but I really don't want to do it myself (as a classic d2 player, I prefer d2hackmap like config, which is tweaked by professional players and sent to normal players as well)