Solved sublist search algorithm

[saurabh12nxf]

This PR adds the implementation of the sublist search algorithm using linked lists in Java. The algorithm determines if one linked list (list2) is a sublist of another linked list (list1) by sequentially comparing nodes using a sliding window approach.
the strategy that i have used:
Node Class: Defined to represent elements in a linked list, encapsulating data and a reference to the next node.
Sublist Search Function: Implemented to check if list2 is a sublist of list1. The function traverses list1 and compares segments of list1 with list2.
Helper Function: Added to create a linked list from an array for easier testing and demonstration.

Main Method: Provided example usage to demonstrate the sublist search algorithm.

Testing:
Created example linked lists and verified that the function correctly identifies sublists.

Tested edge cases including empty lists and lists of different lengths.

Results
Successfully identified list2 as a sublist of list1 in various test cases.

Passed all edge case scenarios.

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