[2.1] Make Rocket Silos output state info via circuit connection

[MangoRage]

Would be great to get state info/options such as the following:

[TLDR]
More circuit options/features in rocket silo

Rockets made (Outputs as a rocket part, with # of rockets ready).
Rocket currently being made (boolean, 1 or 0)
Enable/Disable
Contents of said rocket.

Basically allows for more automation, allows me to force place Aquillo science into the silos so they can be immediately able to launch the science to the space platform, but it currently cant be done without clogging the inserter, to fix it, I can blacklist science from being put into silo if there is only one or less rockets.

Currently cannot do that.

This would make it easier for when making compact designs where options are already limited.

I believe many would benefit from this.