add wtv-1800:/offer-open-isp-suggest for dreamcast clients

zefie_wtvp_minisrv/ServiceVault/wtv-1800/offer-open-isp-suggest.js

@@ -0,0 +1,14 @@
+var gourl = "wtv-1800:/finish-prereg?";
+if (request_headers.query.relogin) gourl += "relogin=true";
+
+
+if (request_headers["wtv-ticket"]) {
+	gourl = "wtv-head-waiter:/login-stage-two?";
+}
+
+headers = `200 OK
+Connection: Keep-Alive
+wtv-expire-all: wtv-
+wtv-open-isp-disabled: false
+wtv-visit: `+ gourl + `
+Content-type: text/html`;