Added various linked list operations including insertion, deletion, split, and merge functionalities

[ghulamhussainkhuhro]

This pull request introduces a variety of linked list operations. The major operations implemented include:

• Insertion: Method to insert elements in a sorted linked list.
• Deletion: Methods to delete specific nodes, delete the first node, and delete the last node.
• Merging: Functions to merge two linked lists.
• Sublist Creation: Methods to create sublists from the given list.
• Splitting: Function to split the list into k parts.
• Cloning: Method to clone the linked list.
• Sum and Average: Methods to compute the sum and average of node values.
• Print Positions: Methods to print nodes at even and odd positions.
• Randomized Print: Method to print the list in a random order.
• filter Even/Odd: Method to filter even and odd values from the list.