[CIR][CodeGen] Support static local variables

[lanza]

Support static local variable. Emit the initialization code into the ctor region of the GlobalOp that represents the static local. During LoweringPrepare expand that ctor region into the guardAcquire/release walk.

Follow ups need to support exceptions and guardAbort.

[bcardosolopes]

Thanks so much for working on this, I gotta say this PR is huge though, we should probably talk about a way to split this down a bit, maybe we can incrementally converge faster if this is done in pieces.