Add @ symbol response file documentation to .NET CLI commands

[Copilot]

Summary

Documents the @ symbol (response file) feature added to .NET CLI commands in SDK 9.0.2xx and 10.0.1xx.

Fixes #46671

Changes

• Created reusable include (includes/cli-response-file.md) documenting @ option syntax and behavior
• Updated five CLI commands with response file support:
  • dotnet workload install (9.0.2xx+)
  • dotnet workload search (9.0.2xx+)
  • dotnet new install (9.0.2xx+)
  • dotnet tool install (10.0.1xx+)
  • dotnet tool update (10.0.1xx+)
• Added examples for dotnet workload install and dotnet tool install

Usage

# Create a response file with options
$ cat workloads.rsp
maui
wasm-tools

# Use it with @ prefix
$ dotnet workload install @workloads.rsp

Response files enable managing complex commands, avoiding terminal limits, and sharing configurations.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add @ symbol support to existing .NET CLI command documentation.</issue_title>
<issue_description>### Describe the issue or suggestion

We added support for the @ format for the dotnet workload search and install commands and dotnet new install command in 9.0.2xx and for dotnet tool install and update commands in 10.0.1xx. The existing documents for these commands should get updated to match.
https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-workload-install
https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-workload-search

• Support package@version syntax for dotnet workload search/update/install version Fixes #42367 sdk#45156

https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-new-install

• Support package@version syntax in dotnet new install, partial fix for #45422 sdk#45545

https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-tool-install
https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-tool-update

• tool install/update: Support package@version syntax sdk#48085

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Document Details

⚠ Do not edit this section. It is required for learn.microsoft.com ➟ GitHub issue linking.

• ID: 2bbfaa61-ebac-d118-6dd1-152a53f37a91
• Version Independent ID: 55bbba16-ae98-5abc-cd42-1b677105fd29
• Platform ID: 04c30459-02b2-903b-2085-0c7b506d5e66
• Content: dotnet workload install command - .NET CLI
• Content Source: docs/core/tools/dotnet-workload-install.md
• Service: dotnet-fundamentals
• GitHub Login: @tdykstra
• Microsoft Alias: tdykstra

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Associated WorkItem - 503205</issue_description>

Comments on the Issue (you are @copilot in this section)

@marcpopMSFT CC @dsplaisted @baronfel

• Fixes Add @ symbol support to existing .NET CLI command documentation. #46671

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