Implement mastodon API endpoints

[yabirgb]

To make it compatible with other mastodon apps:

Accounts

• GET /api/v1/accounts/:id
• GET /api/v1/accounts/:id/followers // It's implemented for AP so it's just the same
• GET /api/v1/accounts/:id/following
• POST /api/v1/accounts/:id/block
• POST /api/v1/accounts/:id/unblock
• POST /api/v1/accounts/:id/mute
• GET /api/v1/accounts/relationships
• GET /api/v1/accounts/search
• PATCH /api/v1/accounts/update_credentials

Media

• POST /api/v1/media
• PUT /api/v1/media/:id

Apps

• POST /api/v1/apps

Likes

• GET /api/v1/favourites

Follow Request

• GET /api/v1/follow_requests

Follow

• POST /api/v1/follows Done but 404 sending to mastodon inbox #22

Instance

• GET /api/v1/instance Need to be pushed