SUB: Fix that function or add another function responsible for sorting from “ oldest “ to “newest”

[Mohtelsayed]

Linked to user story #5 .
Acceptance Criteria:
The website must display a "Sort by" option allowing users to sort posts from "oldest" to "newest." When the "oldest" option is selected, posts should be rearranged chronologically, displaying the earliest posts at the top and the most recent posts at the bottom.

Dependencies:
Upon pressing the sorting button on frontend, the function must be run through an event function. Thus, it requires the connection of frontend and backend to fully resolve issue.

Estimated Effort:
The estimated effort for this task is 5 hours, focusing primarily on backend development to ensure correct sorting functionality. The task is expected to take approximately 1 day.