[GSSOC'23] Add Search Insert Postion in Searching Directory

[bhartik021]

This commit introduces the implementation of a search insert position code and algorithm. The search insert position is a commonly encountered problem where we need to find the position at which a target value should be inserted into a sorted array, such that the array remains sorted.

The added code includes a function that takes in a sorted array and a target value as inputs and returns the index at which the target value should be inserted. If the target value already exists in the array, the function returns its index. Otherwise, it finds the correct position by performing a binary search algorithm.

To achieve this, the function uses a modified binary search approach to efficiently locate the desired position. It compares the target value with the middle element of the array and narrows down the search range accordingly. This process continues until the target value is found or the search range is reduced to a single element.

The code is designed to handle various scenarios, including empty arrays and cases where the target value is smaller or larger than all elements in the array. It has been thoroughly tested to ensure accurate and efficient results.

By adding this search insert position code and algorithm, we enhance the functionality of our project by providing a reliable solution for determining the position of an element in a sorted array or the appropriate insertion point for maintaining the sorted order.

[bhartik021]

Please assing this issue to me under GSSoC'23