Validate textarea against FQDN

[stephdl]

see https://community.nethserver.org/t/ns8-crowdsec-limited-domain-levels-in-allow-list/23301

the regex seems to validate at least 3 strings for a fqdn, we need to validate more than foo.joe.com. Furthermore @DavidePrincipi asked to validate everything in the json schema rather in the UI

Refs NethServer/dev#6900

what I learn:

• idn-email json schema accepts really fun email address : https://en.wikipedia.org/wiki/Email_address#Internationalization
• hostname accepts 1.2.3.450 as a valid hostname, hard to validate ipv4, I needed to make a regex to validate hostname
• format ipv4 does not validate cidr ipv4 (I did a regex to validate a cidr ipv4)
• format ipv6 does not validate cidr ipv6 (I did a regex to validate both)
• empty array must be validated to :p

now we have a full json schema validation, nothing more in UI

the test data

10.10.10.0/24
2002::1234:abcd:ffff:c0a8:101/64
2002:0000:0000:1234:ffff:ffff:ffff:ffff
1.2.3.44
foo.org
foo.foo.org
12123564.org

[DavidePrincipi]

Wise choice