$($Linked List $-$ Recursion$)$

Create a menu to perform the following functions on a singly linked list:

Option $1$: Add an element at a specific position.

Option $2$: Remove an element at a specific position in the list.

Option $3$: Reverse the list.

Option $4$: Find the largest and the second largest elements in the list.

Option $5$: Sort the list in descending order by value.

Option $0$: Exit.

Note: The functions in items $1,2,3,4,$ and $5$ should use recursion to operate the program.