Adding ControlD to list of DNS providers. (#546)

_data/dns/controld.yml

@@ -0,0 +1,23 @@
+title: ControlD
+homepage: 'https://controld.com/'
+anycast: true
+locations:
+  - CA
+privacy_policy:
+  link: 'https://controld.com/privacy'
+type:
+  name: Commercial
+logs:
+  policy: true
+  text: Optional
+  tooltip: >-
+    Neither free nor premium service have logging enabled by default. Premium users can enable logging/analytics at will. 
+  color: info
+protocols:
+  - name: DoH
+  - name: DoT
+dnssec: true
+qname_minimization: true
+filtering: Based on server choice
+providers:
+  - name: Self