[defect]: the 4.0.0 tutorials are missing scripts

[TheCompWiz]

What type of defect/bug is this?

Unexpected behaviour (obvious or verified by project member)

How can the issue be reproduced?

When browsing the freeradius.org server documentation, (specifically the tutorials section), there are several references and mentions to scripts that are suggested to use as examples, but none of those scripts are able to be found.

For example:
https://freeradius.org/documentation/freeradius-server/4.0.0/tutorials/accounting.html
says: "You may create accounting packets by hand for this exercise, but we suggest that the follow test packets from the exercises/packets directory be used in this exercise:"
but there is no "exercises/packets" directory... and specifically named scripts cannot be found anywhere.

Log output from the FreeRADIUS daemon

Not applicable

Relevant log output from client utilities

Not applicable

Backtrace from LLDB or GDB

Not applicable