bug: HIR function branched context not being updated when passed trough body parsing #95

The HIR branched context is being cloned whenever the HIR body lowering is being triggered due to the bundling of it in an half function global scope entry.

Furthermore, every function, even implless ones should actually include a branched context to at least store the arguments and make the global scope system simpler, allowing us to remove the half function system that is messy due to some issues with removal and parsing.