feat(shared): add a channel and messages for generic data requests

feat(schema, shared, api): move all types to shared, separate schema
 * schema is now stored in a separate crate to avoid dependency cycles
 * added note in README.md about handling unwraps

feat(api): reimpl all_games and my_games

fix(api): use gamestate consts

feat(shared): relocate types, add gamestate consts

feat(api): stubs for most game endpoints, complete create

feat(client): derive Reflect for some types

feat(shared): extract_cookie macro

docs: update readme with major issues, and bolded headings

feat(server): store user cookies in memory

chore(server): add note about existing cookie authentication

feat!(client, server): finish transition to bevy 0.10, and in addition
* change from bevy_inspector_egui to bevy_editor_pls
* remove iyes_loopless, as it is now obsolete
* remove bevy_console and swap logs to terminal only, in preperation
  for my own console logging crate

Merge remote branch 'origin/dev'

wip!(client, server, shared): initial updating to bevy 0.10

feat(client): init game handlers module

feat(api): impl models action, gamedata, game

feat(client): settings menu stub

feat(client): show title in play menu

feat(client): center main menu

feat(client): enable the play menu in a crippled state