Add support for SRV record resolution

[ldilley]

Feature Description

• In an effort to enhance DNS lookups, provide support for SRV record (RFC 2782) resolution. This feature should at least be implemented for languages that do not require external dependencies to include the functionality. The following languages can query SRV records natively.
  Go: https://pkg.go.dev/net#LookupSRV
  JavaScript: https://nodejs.org/api/dns.html#dnsresolvesrvhostname-callback
  PHP: https://www.php.net/manual/en/function.dns-get-record.php
  PowerShell: https://learn.microsoft.com/en-us/powershell/module/dnsclient/resolve-dnsname?view=windowsserver2019-ps
  Ruby: https://ruby-doc.org/stdlib-2.5.1/libdoc/resolv/rdoc/Resolv/DNS.html

Progress

• Go (PR Add SRV record support (Go) #154)
• JavaScript
• PHP (PR Add DNS SRV support (PHP) #171)
• PowerShell (PR Add SRV record support (Powershell) #145)
• Python -- using external dependency dnspython (PRs add support for SRV records (python) #152 and Python: Make dependency dnspython optional #153)
• Ruby (PR Add SRV record support (Ruby) #146)