feat(ir): add typed builder for AzurePowerShell@5

[github-actions]

Summary

Adds a typed builder struct for AzurePowerShell@5 to the ado-aw IR.

Motivation

Previously, any code that needed to emit an AzurePowerShell@5 step had to hand-craft TaskStep::new(...) with raw string input keys. This PR introduces a command-dispatch typed builder with file() and inline() entry points returning distinct typestate builders (AzurePowerShellFile / AzurePowerShellInline) so:

• ScriptArguments is only available on the file builder — applying it to an inline target is a compile error rather than a silent drop.
• The inline script body (Inline) is only accepted by the inline builder.
• The AzurePowerShellVersion enum models the LatestVersion / OtherVersion + preferredAzurePowerShellVersion pair so callers express version intent in a single call.
• All constrained inputs are type-checked; bool-string inputs are lowered through bool_input.

Changes

• src/compile/ir/tasks/azure_powershell.rs: new AzurePowerShell entry-point struct + AzurePowerShellFile / AzurePowerShellInline typestate builders + ErrorActionPreference and AzurePowerShellVersion enums + #[cfg(test)] mod tests (5 tests)
• src/compile/ir/tasks/mod.rs: pub mod azure_powershell; declaration (alphabetical order)

ADO Task Reference

• Task: AzurePowerShell@5
• Docs: (https://learn.microsoft.com/en-us/azure/devops/pipelines/tasks/reference/azure-powershell-v5)
• Required inputs: azureSubscription, ScriptType (implicit from builder variant)
• File-only inputs: ScriptPath, ScriptArguments
• Inline-only inputs: Inline
• Shared optional inputs: errorActionPreference, FailOnStandardError, pwsh, workingDirectory, azurePowerShellVersion / preferredAzurePowerShellVersion

Validation

• cargo build --all-targets
• cargo test
• cargo clippy --all-targets --all-features --workspace -- -D warnings

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Created by the ado-task-ir-contributor workflow.

Warning

Firewall blocked 2 domains

The following domains were blocked by the firewall during workflow execution:

• spsprodeus21.vssps.visualstudio.com
• spsprodweu4.vssps.visualstudio.com

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
    - defaults
    - "spsprodeus21.vssps.visualstudio.com"
    - "spsprodweu4.vssps.visualstudio.com"

See Network Configuration for more information.

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