Create a new table for announcements

[SAUMILDHANKAR]

Overview

This issue is related to issue #2326
We need to add a table in our database for announcement dialog.
We would be using create and update CRUD operations for this table as we want to keep track of all old announcements or delete the old ones

Action Items

• Create a table in your local database.
• Use migration script to add it to the production database.
• Once the PR associated with this issue is merged or this issue is closed, check issue Feature: Announcement bar (for holidays, emergencies, etc.) #2326, if all its sub-issues are marked complete, move that issue to the prioritized backlog column so someone can pick it up and check if that issue is complete or needs more work.

Resources/Instructions

• Similar PR Create tables for featureflag and feature-to-user #1963

[SAUMILDHANKAR]

Thanks @hanapotski @junjun107 for helping me setting up local database.

Progress Update:

1. I installed PostGIS version 15.
2. Downloaded and connected to the database using Tableplus.
3. Created a generic table to be used for notifications.
4. Started working on setting up the endpoints.