luci-mod-network: dhcp.js: group DNS record related options in one tab

In order to unclutter the default dnmasq configuration view, move the
Hostnames (A+PTR), SRV, MX and CNAME sections into a new dedicated
"DNS Records" tab.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js

@@ -287,7 +287,7 @@ return view.extend({
 		    duids = hosts_duids_pools[1],
 		    pools = hosts_duids_pools[2],
 		    networks = hosts_duids_pools[3],
-		    m, s, o, ss, so;
+		    m, s, o, ss, so, dnss;
 
 		let noi18nstrings = {
 			etc_hosts: '<code>/etc/hosts</code>',
@@ -355,19 +355,16 @@ return view.extend({
 
 		s.tab('general', _('General'));
 		s.tab('devices', _('Devices &amp; Ports'));
+		s.tab('dnsrecords', _('DNS Records'));
 		s.tab('dnssecopt', _('DNSSEC'));
 		s.tab('filteropts', _('Filter'));
 		s.tab('forward', _('Forwards'));
 		s.tab('limits', _('Limits'));
 		s.tab('logging', _('Log'));
 		s.tab('files', _('Resolv &amp; Hosts Files'));
 		s.tab('leases', _('Static Leases'));
-		s.tab('hosts', _('Hostnames'));
 		s.tab('ipsets', _('IP Sets'));
 		s.tab('relay', _('Relay'));
-		s.tab('srvhosts', _('SRV'));
-		s.tab('mxhosts', _('MX'));
-		s.tab('cnamehosts', _('CNAME'));
 		s.tab('pxe_tftp', _('PXE/TFTP'));
 
 		s.taboption('filteropts', form.Flag, 'domainneeded',
@@ -836,7 +833,19 @@ return view.extend({
 			so.value(index, display_str);
 		});
 
-		o = s.taboption('srvhosts', form.SectionValue, '__srvhosts__', form.TableSection, 'srvhost', null,
+		o = s.taboption('dnsrecords', form.SectionValue, '__dnsrecords__', form.TypedSection, '__dnsrecords__');
+
+		dnss = o.subsection;
+
+		dnss.anonymous = true;
+		dnss.cfgsections = function() { return [ '__dnsrecords__' ] };
+
+		dnss.tab('hosts', _('Hostnames'));
+		dnss.tab('srvhosts', _('SRV'));
+		dnss.tab('mxhosts', _('MX'));
+		dnss.tab('cnamehosts', _('CNAME'));
+
+		o = dnss.taboption('srvhosts', form.SectionValue, '__srvhosts__', form.TableSection, 'srvhost', null,
 			_('Bind service records to a domain name: specify the location of services. See <a href="%s">RFC2782</a>.').format('https://datatracker.ietf.org/doc/html/rfc2782')
 			+ '<br />' + _('_service: _sip, _ldap, _imap, _stun, _xmpp-client, … . (Note: while _http is possible, no browsers support SRV records.)')
 			+ '<br />' + _('_proto: _tcp, _udp, _sctp, _quic, … .')
@@ -875,7 +884,7 @@ return view.extend({
 		so.datatype = 'range(0,65535)';
 		so.placeholder = '50';
 
-		o = s.taboption('mxhosts', form.SectionValue, '__mxhosts__', form.TableSection, 'mxhost', null,
+		o = dnss.taboption('mxhosts', form.SectionValue, '__mxhosts__', form.TableSection, 'mxhost', null,
 			_('Bind service records to a domain name: specify the location of services.')
 			 + '<br />' + _('You may add multiple records for the same domain.'));
 
@@ -902,7 +911,7 @@ return view.extend({
 		so.datatype = 'range(0,65535)';
 		so.placeholder = '0';
 
-		o = s.taboption('cnamehosts', form.SectionValue, '__cname__', form.TableSection, 'cname', null, 
+		o = dnss.taboption('cnamehosts', form.SectionValue, '__cname__', form.TableSection, 'cname', null,
 			_('Set an alias for a hostname.'));
 
 		ss = o.subsection;
@@ -923,7 +932,7 @@ return view.extend({
 		so.datatype = 'hostname';
 		so.placeholder = 'example.com.';
 
-		o = s.taboption('hosts', form.SectionValue, '__hosts__', form.GridSection, 'domain', null,
+		o = dnss.taboption('hosts', form.SectionValue, '__hosts__', form.GridSection, 'domain', null,
 			_('Hostnames are used to bind a domain name to an IP address. This setting is redundant for hostnames already configured with static leases, but it can be useful to rebind an FQDN.'));
 
 		ss = o.subsection;