Implement a function curry(fn) that transforms a function taking multiple arguments into a function that can be called repeatedly with any number of arguments until all required arguments are provided.

The function should:

• Accept a function fn with a fixed number of parameters.
• Return a curried version of the function.
• Allow partial application with any number of arguments.
• Return the final result when the total number of provided arguments reaches the original function's arity.

Example

function sum(a, b, c) {
  return a + b + c;
}

const curriedSum = curry(sum);
curriedSum(1)(2)(3); // 6
curriedSum(1, 2)(3); // 6
curriedSum(1)(2, 3); // 6