Feature/friendship system

[xXPinkmagicXx]

Added following for Add friendship System Issue

• migration script for friendship system
• Endpoints for manipulating friendships

Endpoints in api/endpoints/friends

• "/get_friends/<user_id>" - get all friends for a user
• "/get_friend_requests/<user_id>" - get all friend request for a user
• "/send_friend_request": Created a new row in the friend_requests table
• "/delete_friend_request" - delete the send friend request in friend_request table
• "/accept_friend_request" - accept friend_request and create new row in friends table
• "/unfriend" - delete friendship, the row in the friends table

[github-actions]

ArchLens detected architectural changes in the following views:

[xXPinkmagicXx]

Remember to add @requires_session for all the endpoints