Bindable Mana Pool

A tiny mixin addon of [Botania](https://github.com/VazkiiMods/Botania), which makes generator flowers able to output to mana pools directly.  # Feature - directly link mana generator flowers to the pool, without going through a spreader first - which reduces mana loss and client particle rendering pressure, - and might be overpowered for flowers with mechanics about their mana buffers