Add GitHub Actions workflow for Copilot setup with Deno

[Copilot]

• Create GitHub Actions workflow for Copilot setup with Deno
• Match exact structure from Foundatio.Mediator reference
• Replace dotnet-setup with deno-setup as requested
• Fix linting error by adding missing newline at end of file

The workflow is now properly formatted and passes YAML linting requirements.

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

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[ejsmith]

@copilot it should look like this one: https://github.com/FoundatioFx/Foundatio.Mediator/blob/main/.github/workflows/copilot-setup-steps.yml

Don't add anything extra. Just use deno-setup instead of dotnet-setup.

[Copilot]

@copilot it should look like this one: https://github.com/FoundatioFx/Foundatio.Mediator/blob/main/.github/workflows/copilot-setup-steps.yml

Don't add anything extra. Just use deno-setup instead of...

Updated the copilot-setup-steps.yml to match the exact structure from the Foundatio.Mediator reference, replacing dotnet-setup with deno-setup as requested. The file is now properly located in .github/workflows/ and follows the simple GitHub Actions workflow format. (c19fc93)

[ejsmith]

@copilot fix the linting error

[Copilot]

@copilot fix the linting error

Fixed the linting error by adding the missing newline at the end of the file. The workflow now passes yamllint validation. (b8e5f6e)

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• dl.deno.land
  • Triggering command: curl -s REDACTED (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)