change cookie for userLogged to be much more secure


Move code into classes/functions, and modularise it

Build the entities that we need, and call them in the code

add functionality to

make team
add player
join tournament (request to join)
when tourney has enough applicats, then arrange the matches for first seeds
make tourney

show match page
have elo changes seperate
have matchmaking seperate

front-controller
https://symfony.com/doc/current/introduction/from_flat_php_to_symfony.html#a-front-controller-to-the-rescue


Seperate logic from any front end (logic needs to be able to run via command line)
it can return what is needed for the front end only