chore: update to .NET 7

feat(packets): merge send and receive packet handling to one method

chore(core): update version

feat(samples): update file client

feat(core): make command handler not found error

feat!(core): make some classes internal

chore(core): update version

fix(core): cancel control command cancellation token every time

feat(core): handle exceptions in command processor

chore: update versions

fix(core): handle exceptions in packet handler

fix(game): release game semaphore on exception

fix(game): verify eq packet size

chore(packets): update version

fix(packets): make cancel unknown nullable

fix(packets): make cinfo icon short

fix(packets): make eq packet size optional

fix(game): remove trailing spaces in position

chore: update versions

feat(packets): add cancel packet