fix(mem2reg): Handle aliases in function last store cleanup and additional alias unit test (noir-lang/noir#5967)

fix: let `derive(Eq)` work for empty structs (noir-lang/noir#5965)
feat: add `FunctionDefinition` methods `is_unconstrained` and `set_unconstrained` (noir-lang/noir#5962)
feat: LSP autocompletion for attributes (noir-lang/noir#5963)
feat: `Module::add_item` (noir-lang/noir#5947)
feat: Add `StructDefinition::add_generic` (noir-lang/noir#5961)
feat: Add `StructDefinition::name` (noir-lang/noir#5960)
fix(mem2reg): Handle aliases better when setting a known value for a load (noir-lang/noir#5959)
feat: Arithmetic Generics (noir-lang/noir#5950)
feat: add `FunctionDefinition::module` and `StructDefinition::module` (noir-lang/noir#5956)
feat: LSP now suggests self fields and methods (noir-lang/noir#5955)

Author: AztecBot