Implement a function deepMerge(...objs) that merges multiple objects into a single object recursively.

The function should:

• Accept any number of objects as arguments.
• Merge nested objects recursively.
• For properties with the same key, values from later objects should overwrite earlier ones.
• Return a new object without mutating the original objects.

Example

const obj1 = { a: 1, b: { c: 2 } };
const obj2 = { b: { d: 3 }, e: 4 };
const result = deepMerge(obj1, obj2);
console.log(result); // { a: 1, b: { c: 2, d: 3 }, e: 4 }