cl-ast: Cleanup

- Function bind is now one Pattern
- TyRef now allows &Ty (i.e. &[i32], &(char, bool)
- Range patterns (they cannot bind, only check whether a value is in range
- ArrayRep repeat has been reverted to usize, for now, until early consteval is implemented.

compiler/cl-ast/src/ast_impl/weight_of.rs

@@ -342,6 +342,8 @@ impl WeightOf for Pattern {
             Pattern::Rest(Some(pattern)) => pattern.weight_of(),
             Pattern::Rest(None) => 0,
             Pattern::Ref(mutability, pattern) => mutability.weight_of() + pattern.weight_of(),
+            Pattern::RangeExc(head, tail) => head.weight_of() + tail.weight_of(),
+            Pattern::RangeInc(head, tail) => head.weight_of() + tail.weight_of(),
             Pattern::Tuple(patterns) | Pattern::Array(patterns) => patterns.weight_of(),
             Pattern::Struct(path, items) => {
                 let sitems: usize = items