(captiveportal, new) add lighttpd config for passing access api to CP zones

(cherry picked from commit 3fa4856d)

src/opnsense/service/templates/OPNsense/Captiveportal/+TARGETS

 #rc.conf.d:/etc/rc.conf.d/captiveportal
 captiveportal.conf:/usr/local/etc/captiveportal.conf
+lighttpd-api-dispatcher.conf:/var/etc/lighttpd-api-dispatcher.conf

src/opnsense/service/templates/OPNsense/Captiveportal/lighttpd-api-dispatcher.conf

+#
+# lighttpd configuration file for captiveportal API access (used by proxy pass on every zone, only accessible via localhost)
+#
+############ Options you really have to take care of ####################
+
+## FreeBSD!
+server.event-handler	= "freebsd-kqueue"
+server.network-backend	= "writev"
+#server.use-ipv6 = "enable"
+
+## modules to load
+server.modules              =   ( "mod_access", "mod_expire", "mod_compress", "mod_redirect",
+				 ,"mod_cgi", "mod_fastcgi","mod_alias", "mod_rewrite"
+)
+
+server.max-keep-alive-requests = 15
+server.max-keep-alive-idle = 30
+
+## a static document-root, for virtual-hosting take look at the
+## server.virtual-* options
+server.document-root        = "/usr/local/opnsense/www/"
+
+
+# Phalcon api routing
+alias.url += ( "/api/"  => "/usr/local/opnsense/www/" )
+url.rewrite = ( "^/api/(.*)$" => "/api/api.php?_url=/$1")
+
+
+# Maximum idle time with nothing being written (php downloading)
+server.max-write-idle = 999
+
+## where to send error-messages to
+server.errorlog-use-syslog="enable"
+
+# files to check for if .../ is requested
+server.indexfiles           = ( "index.php", "index.html",
+                                "index.htm", "default.htm" )
+
+url.access-deny             = ( "~", ".inc" )
+
+
+######### Options that are good to be but not neccesary to be changed #######
+
+## bind to port (default: 80)
+server.bind  = "127.0.0.1"
+server.port  = 8999
+
+## to help the rc.scripts
+server.pid-file            = "/var/run/lighttpd-api-dispatcher.pid"
+
+## virtual directory listings
+server.dir-listing         = "disable"
+
+## enable debugging
+debug.log-request-header   = "disable"
+debug.log-response-header  = "disable"
+debug.log-request-handling = "disable"
+debug.log-file-not-found   = "disable"
+server.max-request-size    = 2097152
+
+#### fastcgi module
+## read fastcgi.txt for more info
+fastcgi.server = ( ".php" =>
+	( "localhost" =>
+		(
+			"socket" => "/tmp/php-fastcgi.socket",
+			"max-procs" => 2,
+			"bin-environment" => (
+				"PHP_FCGI_CHILDREN" => "1",
+				"PHP_FCGI_MAX_REQUESTS" => "500"
+			),
+			"bin-path" => "/usr/local/bin/php-cgi"
+		)
+	)
+)