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>

docs/_functions/domain/DS.md

@@ -0,0 +1,30 @@
+---
+name: DS
+parameters:
+  - name
+  - keytag
+  - algorithm
+  - digesttype
+  - digest
+  - modifiers...
+---
+
+DS adds a DS record to the domain.
+
+Key Tag should be a number.
+
+Algorithm should be a number.
+
+Digest Type must be a number.
+
+Digest must be a string.
+
+{% include startExample.html %}
+{% highlight js %}
+
+D("example.com", REGISTRAR, DnsProvider(R53),
+  DS("example.com", 2371, 13, 2, "ABCDEF")
+);
+
+{%endhighlight%}
+{% include endExample.html %}