Allow typing for destructive assignment

[gavr123456789]

Summary

type
  SomeType1 = object
  SomeType2 = object
  Example = tuple [some1: SomeType1, some2: SomeType2]
  
proc foo(): Example = 
  (SomeType1(), SomeType2())

var (sas, ses) = foo()

For better readability, I would like to be able to type variables when tuple is used as a multiple return

var (sas: SomeType1, ses: SomeType2) = foo()