feat: add name option to d/domain

[burnsjared0415]

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Summary of Pull Request

Updated d/vcf_domain to support name alongside the existing domain_id.

Type of Pull Request

• This is a bug fix.
• This is an enhancement or feature.
• This is a code style/formatting update.
• This is a documentation update.
• This is a refactoring update.
• This is a chore update
• This is something else.
  Please describe:

Related to Existing Issues

Closes #207

Test and Documentation Coverage

For bug fixes or features:

• Tests have been completed.
• Documentation has been added/updated.

✅ TestAccDataSourceVcfDomainByID

Running tool: /usr/local/bin/go test -timeout 30s -run ^TestAccDataSourceVcfDomainById$ github.com/vmware/terraform-provider-vcf/internal/provider

ok  	github.com/vmware/terraform-provider-vcf/internal/provider	0.969s

✅ TestAccDataSourceVcfDomainByName

Running tool: /usr/local/bin/go test -timeout 30s -run ^TestAccDataSourceVcfDomainByName$ github.com/vmware/terraform-provider-vcf/internal/provider

ok  	github.com/vmware/terraform-provider-vcf/internal/provider	0.776s

Breaking Changes?

• Yes, there are breaking changes.
• No, there are no breaking changes.

[dimitarproynov]

It looks like the file data_source_domain_test.go doesn't compile. Please, fix it and then run the acceptance tests for domain data source and post the result in the MR description.

[burnsjared0415]

this is already in comments and will be looked at.

[tenthirtyam]

Verified the tests (see summary) and pushed an update to include updates to the Description fields for clarifty and readability.

LGTM! 🚀

[github-actions]

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