New RTYPE: DS records now supported! (#753)

Thanks to @haraldkoch for starting this, @McNetic for picking it up.

* Added DS record type

* Added DS for cloudflare provider with tests

* Removed DS validation, fixed parse test

* Added generated files

* Added dnsimple ds record

* Regenerated documentation matrix

* rebased and regenerated

* Updated integration tests

* Rebase and regenerate

* Enable DS record type for provider desec

* Added DS record type

* Added DS for cloudflare provider with tests

* Removed DS validation, fixed parse test

* Added generated files

* Added dnsimple ds record

* Regenerated documentation matrix

* rebased and regenerated

* Updated integration tests

* Rebase and regenerate

* Enable DS record type for provider desec

* Rebase and fixes

Co-authored-by: Robert Koch <robert@kochie.io>
Co-authored-by: Nicolai Ehemann <nicolai.ehemann@enerko-informatik.de>

pkg/js/parse_tests/027-ds.js

@@ -0,0 +1,4 @@
+D("foo.com","none",
+    DS("@", 1000, 13, 2, "AABBCCDDEEFF"),
+    DS("@", 1, 1, 1, "FFFF")
+);

pkg/js/parse_tests/027-ds.json

@@ -0,0 +1,31 @@
+{
+  "registrars": [],
+  "dns_providers": [],
+  "domains": [
+    {
+      "name": "foo.com",
+      "registrar": "none",
+      "dnsProviders": {},
+      "records": [
+        {
+          "type": "DS",
+          "name": "@",
+          "target": "",
+          "dskeytag": 1000,
+          "dsalgorithm": 13,
+          "dsdigesttype": 2,
+          "dsdigest": "AABBCCDDEEFF"
+        },
+        {
+          "type": "DS",
+          "name": "@",
+          "target": "",
+          "dskeytag": 1,
+          "dsalgorithm": 1,
+          "dsdigesttype": 1,
+          "dsdigest": "FFFF"
+        }
+      ]
+    }
+  ]
+}