Add GET for DCV Delegation UUID endpoint

[troymjones]

Description

https://api.cloudflare.com/client/v4/zones/<zone_id>/dcv_delegation/uuid is not currently supported by the Go SDK.
closes #1383

Has your change been tested?

Unit tests added in changes

Types of changes

What sort of change does your code introduce/modify?

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• This change is using publicly documented in cloudflare/api-schemas
  and relies on stable APIs.

[github-actions]

changelog detected ✅

[vasilzhigilei]

Code looks good from SSL team side
Edit: we'll add API docs to unblock this

[vasilzhigilei]

API docs are now available: https://developers.cloudflare.com/api/operations/dcv-delegation-uuid-get

[codecov-commenter]

Codecov Report

Merging #1384 (93050ce) into master (b9ac804) will increase coverage by 0.08%.
Report is 265 commits behind head on master.
The diff coverage is 50.39%.

@@            Coverage Diff             @@
##           master    #1384      +/-   ##
==========================================
+ Coverage   48.33%   48.42%   +0.08%     
==========================================
  Files         133      140       +7     
  Lines       13023    13822     +799     
==========================================
+ Hits         6295     6693     +398     
- Misses       5201     5470     +269     
- Partials     1527     1659     +132     

Files Changed	Coverage Δ
access_audit_log.go	79.31% <ø> (ø)
access_bookmark.go	72.44% <ø> (ø)
access_keys.go	71.42% <ø> (ø)
access_organization.go	53.84% <ø> (ø)
access_service_tokens.go	51.85% <ø> (ø)
account_members.go	65.54% <ø> (ø)
account_roles.go	53.84% <ø> (ø)
accounts.go	50.81% <ø> (ø)
addressing_address_map.go	39.04% <ø> (ø)
addressing_ip_prefix.go	45.45% <ø> (ø)
... and 122 more

... and 1 file with indirect coverage changes

[github-actions]

This functionality has been released in v0.77.0.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!