Feature: Display data from Past GMs

[snigdha-kansal]

Issue

Users can't access the data for past GMs.

Proposed Solution

The idea is to have a brief summary of them on the main GM Page itself similar to how it's been done for the Townhall Page.

As per #671, GM Page data is now fetched from a Google Sheet. One good approach would be to create a new sheet within the existing GM Google Sheet to fetch and display the data. You can access the data for Past GMs here.

We will also want to remove the past GM pages once this has been done to remove unneeded code bloat on the frontend.

This will allow users to easily access historical information about ACM's activities, fostering transparency and engagement.