SUB: Implement the searching function

[shgxshg]

linked to user story #4
Acceptance criteria: The task will be complete when the search function is implemented, allowing users to search for posts or discussions based on keywords, and ensuring that the search returns accurate and relevant results efficiently, both in terms of backend processing and frontend display.

Dependencies:
No major dependencies. Need to integrate information/content from posts to search through posts. Need to access postData to implement

Estimated Effort:
The estimated effort for this task is 6 hours, involving backend processing to index and retrieve post data based on keywords. The task is expected to be completed in approximately 2 days.