Various improvements from feedback from .NET SDK review

[gerrytan]

This PR adds various improvements based on .NET SDK feedback (see PR). Mostly renaming.

ARM (Control Plane) API Specification Update Pull Request

Tip

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PR review workflow diagram

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Purpose of this PR

What's the purpose of this PR? Check the specific option that applies. This is mandatory!

• New resource provider.
• New API version for an existing resource provider. (If API spec is not defined in TypeSpec, the PR should have been created in adherence to OpenAPI specs PR creation guidance).
• Update existing version for a new feature. (This is applicable only when you are revising a private preview API version.)
• Update existing version to fix OpenAPI spec quality issues in S360.
• Convert existing OpenAPI spec to TypeSpec spec (do not combine this with implementing changes for a new API version).
• Other, please clarify:
  • edit this with your clarification

Due diligence checklist

To merge this PR, you must go through the following checklist and confirm you understood
and followed the instructions by checking all the boxes:

• I confirm this PR is modifying Azure Resource Manager (ARM) related specifications, and not data plane related specifications.
• I have reviewed following Resource Provider guidelines, including
  ARM resource provider contract and
  REST guidelines (estimated time: 4 hours).
  I understand this is required before I can proceed to the diagram Step 2, "ARM API changes review", for this PR.

Additional information

Viewing API changes

For convenient view of the API changes made by this PR, refer to the URLs provided in the table
in the Generated ApiView comment added to this PR. You can use ApiView to show API versions diff.

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• First, please carefully read through this PR description, from top to bottom. Please fill out the Purpose of this PR and Due diligence checklist.
• If you don't have permissions to remove or add labels to the PR, request write access per aka.ms/azsdk/access#request-access-to-rest-api-or-sdk-repositories
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Next Steps to Merge

✅ All automated merging requirements have been met! To get your PR merged, see aka.ms/azsdk/specreview/merge.

[openapi-pipeline-app]

Generated ApiView

Language	Package Name	ApiView Link
Go	sdk/resourcemanager/terraform/armterraform	https://apiview.dev/Assemblies/Review/503eaf6a29f042d992b397d076b83d9d?revisionId=2672866c64d8496d886edc8f0408e8ac
Java	azure-resourcemanager-terraform	https://apiview.dev/Assemblies/Review/08da9e2c15c743569b06127f7673f6e0?revisionId=5ab50adaf2274a338fc2e7156faa64ad
.Net	Azure.ResourceManager.Terraform	https://apiview.dev/Assemblies/Review/917692ad180248b996b8631b04664220?revisionId=77723762267e4ce5bc4c6b23c3ef96c5
Swagger	Microsoft.AzureTerraform	https://apiview.dev/Assemblies/Review/f326d4b7a01f41678791ea3fee78bec6?revisionId=460b16656d8c409280364bf8f43e5e21
TypeSpec	Microsoft.AzureTerraform.Management	https://apiview.dev/Assemblies/Review/0080428d31e347da92d234bdc158b5c3?revisionId=4d2147e74fb84adb9a1902356c2dc28a