Add DNS provider data files and move DNS page

_data/dns/quad9.yml

@@ -0,0 +1,25 @@
+title: Quad9
+homepage: 'https://quad9.net/'
+anycast: true
+locations:
+  - CH
+privacy_policy:
+  link: 'https://quad9.net/policy/'
+type:
+  name: Non-Profit
+logs:
+  policy: true
+  text: Some
+  tooltip: >-
+    "Our normal course of data management does not have any IP address information or other PII logged to disk or transmitted out of the location in which the query was received."
+protocols:
+  - name: DoH
+  - name: DoT
+  - name: DNSCrypt
+dnssec: true
+qname_minimization: true
+filtering: Malware blocking by default
+providers:
+  - name: Self
+  - name: Packet Clearing House
+    link: 'https://www.pch.net/'