IPC: shutdown hooks

IPC metrics

monitoring: add helper to register a metric without duplicating

monitoring: ignore OPTIONS requests that dont have a route handler

Monitoring: tag HTTP response rate histogram by route rather than request url

*/Server.ts: Handle metrics requests

*/Server.ts: Add monitoring init hook

Process lifecycle scripts

IPC: shutdown hooks ...

#Conflicts:
#	src/util/util/ipc/listener/UnixSocketListener.ts

Fix some copyright headers

Break up bulk inserts for read states to avoid postgres parameter exhaustion

Trace fillInMissingIDs

Better error handling in rabbitmqsinglelistener/writer

Add NixOS test for starting with rabbitmq-single ipc

Demote default rabbitmq behavior, implement init for all BaseEventWriter/Listener abstracted implementations

Move publishEvent to RabbitMQ.ts

Move rabbitListen to RabbitMQ.ts

Clean up unused imports in IPC code

Add untested rabbitmq single-channel IPC

Split unix socket IPC to separate files, add interfaces

channelOrdering: fix null ref

Fix some copyright headers

Clean up erlpack types

Add internal status order enum

Rework status enum schema

Add deprecation warning for database config

Hexdump CDN hashes

Clean up imports in schemas/api/bots

eslint: yoda

eslint: default-case