DLP-1223: Add support for DLP EDM and CWL datasets

[OrionNebula]

Description

Adds support for the DLP EDM/CWL dataset APIs to the Go client in anticipation of Terraform support. All publicly-documented routes have an equivalent client method.

Has your change been tested?

Unit tests added for each new client method

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 ✅

[codecov-commenter]

Codecov Report

Attention: 538 lines in your changes are missing coverage. Please review.

Comparison is base (b9ac804) 48.33% compared to head (8e92261) 53.59%.
Report is 587 commits behind head on master.

Files	Patch %	Lines
api_shield_schemas.go	54.81%	35 Missing and 26 partials ⚠️
observatory.go	54.68%	29 Missing and 29 partials ⚠️
per_hostname_tls_settings.go	41.86%	25 Missing and 25 partials ⚠️
dlp_dataset.go	45.45%	24 Missing and 24 partials ⚠️
logpush.go	48.86%	43 Missing and 2 partials ⚠️
devices_policy.go	56.96%	23 Missing and 11 partials ⚠️
access_users.go	76.84%	11 Missing and 11 partials ⚠️
d1.go	70.27%	11 Missing and 11 partials ⚠️
access_custom_page.go	58.33%	10 Missing and 10 partials ⚠️
page_shield_policies.go	60.86%	9 Missing and 9 partials ⚠️
... and 19 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1485      +/-   ##
==========================================
+ Coverage   48.33%   53.59%   +5.25%     
==========================================
  Files         133      156      +23     
  Lines       13023    11903    -1120     
==========================================
+ Hits         6295     6379      +84     
+ Misses       5201     3672    -1529     
- Partials     1527     1852     +325     

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[github-actions]

This functionality has been released in v0.87.0.

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