FBR nerfs

Since the devs mentioned that they were looking for ways to nerf the FBR, I want to state my proposal.

The core issue in my opinion is the minuscule amount of raw resources needed to run it. The rest is very well balanced. To fix this I propose to change the blanket fuel recipe in the chemical plant to use 10x the depleted uranium and yellow cake. It would bring the consumption on par with a T1 reactor, but for 240MW instead of 90MW.

Furthermore, it would also mean that using a mix of T2 reactors and FBRs would extract the most power per uranium and could lead to more varied solutions based on the priorities of the player, akin to the crude oil refinery, which I think is good for the game.