mention how to disable watchdog and client timeouts on debugging page

[MiniDigger]

https://docs.papermc.io/paper/dev/debugging/
that page could mention the -Ddisable.watchdog=true system prop and maybe mention https://modrinth.com/mod/timeoutout for client timeouts
to improve the debugging experience

context: https://discord.com/channels/289587909051416579/555469074080202765/1521125482756575434
and https://discord.com/channels/289587909051416579/947676006964162611/1521126388621512816