[rwkv-x] v5 model memory scaling benchmark

[PicoCreator]

Understanding the V5 architecture, and what affect its memory size

First, outlining the status quo, V5 has proven to beat out all existing V4, and V5+wavenet architecture in being able to retain memory for L24/D2048. The attached is the high level performance

The goal, is to figure out how this scales, by layer/embedding size/head size/ etc

Follow on the following discord thread: https://discord.com/channels/992359628979568762/1142397705314906182/1142397998853279744