Migrate from chrony to ntpd-rs

[flawedworld]

/etc/ntpd-rs/ntp.toml

https://archlinux.org/packages/extra/x86_64/ntpd-rs/

Below based off my own config I use personally atm.

[observability]
log-level = "info"

[[source]]
mode = "nts"
address = "time.cloudflare.com"

[[source]]
mode = "nts"
address = "ntppool1.time.nl"

[[source]]
mode = "nts"
address = "nts.netnod.se"

[[source]]
mode = "nts"
address = "ptbtime1.ptb.de"

[[source]]
mode = "nts"
address = "time.dfm.dk"

[[source]]
mode = "nts"
address = "time.cifelli.xyz"

[synchronization]
single-step-panic-threshold = 1800
startup-step-panic-threshold = { forward="inf", backward = 86400 }
minimum-agreeing-sources = 3