feat(netcode-rewrite): atttempt prediction

feat(netcode-rewrite): vastly improve client simulation accuracy

feat(netcode-rewrite): begin reimplementing replication

feat(netcode-rewrite): re-add networking

chore(netcode-rewrite): further code cleanup & simplification

chore(netcode-rewrite): code cleanups and refactoring

chore(netcode-rewrite): general codebase refactor