Move admin center / publish to env authentication to action rather than inline powershell

[aholstrup1]

❔What, Why & How

Problem
Right now, the "Publish to Environment" and "Create Online Dev. Environment" workflows will fail when no Authcontext is provided. AL-Go is supposed to use the DeviceCode flow when we're lacking an Authcontext but in order to run DownloadAndImportBcContainerHelper we need to import the DebugHelper.psm1. Right now we don't, so we see failures around "OutputDebug" not being recognized.

Proposed Solution
Both workflow use an inline powershell script. We could move this to its own AL-Go action where the script is invoked with Invoke-AlGoAction.ps1. That way we ensure that DebugLogHelper is imported.

Related to issue: #2113

✅ Checklist

• Add tests (E2E, unit tests)
• Update RELEASENOTES.md
• Update documentation (e.g. for new settings or scenarios)
• Add telemetry

[Copilot]

Pull request overview

This PR addresses issue #2113 where the "Create Online Dev. Environment" and "Publish to Environment" workflows fail when no AuthContext is provided due to missing DebugLogHelper imports. The solution extracts inline PowerShell authentication logic into a new reusable AL-Go action called CheckAuthContext, which is invoked using Invoke-AlGoAction.ps1 to ensure proper module imports.

Changes:

• Created new CheckAuthContext action to handle authentication context verification and device code flow initialization
• Updated CreateOnlineDevelopmentEnvironment and PublishToEnvironment workflows to use the new action
• Added comprehensive unit tests for the new action

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Actions/CheckAuthContext/CheckAuthContext.ps1	Core script that checks for auth secrets and initiates device code flow if needed
Actions/CheckAuthContext/action.yaml	Action definition with inputs and outputs, invokes script via Invoke-AlGoAction.ps1
Actions/CheckAuthContext/README.md	Documentation for the new action including inputs, outputs, and usage
Tests/CheckAuthContext.Action.Test.ps1	Comprehensive unit tests covering secret discovery, fallback logic, and device login scenarios
RELEASENOTES.md	Added issue #2113 to release notes

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