[WIP] Sting rework v0.1

Moving stings to proc_holder, part 1.
[WIP] Changeling rework

Further work in rewriting stings.
Sting rework v0.3

It compiles.
adds missing file
line-ending merge conflict I don't even
Sting rework v0.4

Compiles and sting infra “works”. Evolution menu throws script errors.
sting rework v0.5

I think it compiles, but there are a few issues still.