Add support for DnsForwardingRuleSet, DnsForwardingRuleSetForwardingRule, DnsResolver, DnsResolversInboundEndpoint and DnsResolversOutboundEndpoint

[super-harsh]

Closes #2800

What this PR does / why we need it:

Adds support for DnsForwardingRuleSet, DnsForwardingRuleSetForwardingRule, DnsResolver, DnsResolversInboundEndpoint and DnsResolversOutboundEndpoint resources.

If applicable:

• this PR contains tests

[codecov-commenter]

Codecov Report

Merging #3046 (3ea8e05) into main (52d94c8) will increase coverage by 0.00%.
The diff coverage is 58.41%.

@@            Coverage Diff            @@
##             main    #3046     +/-   ##
=========================================
  Coverage   54.27%   54.28%             
=========================================
  Files        1379     1399     +20     
  Lines      596286   599179   +2893     
=========================================
+ Hits       323664   325239   +1575     
- Misses     219482   220604   +1122     
- Partials    53140    53336    +196     

Impacted Files	Coverage Δ
...20701/dns_forwarding_ruleset_spec_arm_types_gen.go	33.33% <33.33%> (ø)
...ing_rulesets_forwarding_rule_spec_arm_types_gen.go	33.33% <33.33%> (ø)
...k/v1api20220701/dns_resolver_spec_arm_types_gen.go	33.33% <33.33%> (ø)
...s_resolvers_inbound_endpoint_spec_arm_types_gen.go	33.33% <33.33%> (ø)
..._resolvers_outbound_endpoint_spec_arm_types_gen.go	33.33% <33.33%> (ø)
..._forwarding_rule_sets_forwarding_rule_types_gen.go	55.17% <55.17%> (ø)
...0220701storage/dns_forwarding_ruleset_types_gen.go	55.17% <55.17%> (ø)
...ork/v1api20220701storage/dns_resolver_types_gen.go	55.17% <55.17%> (ø)
...torage/dns_resolvers_inbound_endpoint_types_gen.go	55.17% <55.17%> (ø)
...orage/dns_resolvers_outbound_endpoint_types_gen.go	55.17% <55.17%> (ø)
... and 11 more

... and 33 files with indirect coverage changes

[matthchr]

Should this be able to source from configMap?

Also happy to defer until user requests if we don't know of an interesting use-case.

[super-harsh]

Makes sense, might as well chuck in an optional configmap ref import.

[matthchr]

minor: Maybe alias this to just network? It's easier to read than v1api20220701