rewrite the client in svelte (part 1)

Merge branch 'bevy_rewrite' of https://gitlab.com/starkingdoms.tk/starkingdoms.tk into bevy_rewrite

Merge branch 'bevy_rewrite' of gitlab.com:starkingdoms.tk/starkingdoms.tk into bevy_rewrite

fully restructure the client

initial work on pixijs

add prettier formatting checks

rendering

gateway connection

client main page ui