[Suggestion] Achillean/MLM Pigment to match the others

[jayschuster]

I noticed that there were many pride pigments, which is super cool, but a noticeable missing one was the MLM/Achillean label: This would be cool to include alongside Lesbian and Gay as a more specific MLM flag :)

[object-Object]

Remaining work to add this:

• Add an item texture (hiiii @Falkory220)
• Fix the invalid fourth colour code 0xe49c7 (@Talia-12)

https://github.com/FallingColors/HexMod/blob/7e94b76d8eb53fd104ceb57fb14253479110c34e/Common/src/main/java/at/petrak/hexcasting/common/items/pigment/ItemPridePigment.java#L23