Reorganizing the whole project

.env.example added for guidance

Correcting obvious errors

getByUser posts now ordered by 'created_at'

Image send in token to be used in the front

getByUser Post controller added

User getById function now includes the number of posts made

Token validation error message modified

Image added to getById user controller

Post body max length now 1000 characters

Post title and body lengths properly defined

User img now added, profile pictures now available

Docs added, Comments now display in descending order

last images deleted

Images now excluded with .gitignore