match::simple but as a real infix operator

Changes for 0.000002 - 2023-07-10

• If the right-hand side of the `matches` operator is a non-reference, short-circuit match::simple and directly check definedness and string equality.
• If the right-hand side of the `matches` operator is a Type::Tiny object, short-circuit match::simple and directly use the Type::Tiny API.
• Both these changes are merely optimizations and shouldn't affect the result of the operator.