feat: support skips for policy-manager

[gusfcarvalho]

Behavior:

• When skip_reason="non-empty" in a policy, no evidence is produced
• When skip_reason=="" or not set (for compatibility), evidence is produced normally
• Skip check bypasses title validation
  Debug log message: "Skipping evidence for policy {policy_file} {policy_package}: reason"

[Copilot]

Pull request overview

This PR adds first-class support for “skipped” policies in the policy-manager pipeline, allowing a policy to explicitly opt out of evidence generation via a skip field in Rego output.

Changes:

• Extend policy evaluation output (EvalOutput) with a Skip boolean decoded from policy results.
• Update PolicyProcessor.GenerateResults to bypass evidence creation when skip=true.
• Add unit tests covering skip=true, skip=false, missing skip defaulting to false, and validating that skip bypasses title validation.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
policy-manager/policy-manager.go	Adds Skip to EvalOutput and short-circuits evidence generation when a policy result is marked skipped.
policy-manager/policy-manager_test.go	Adds test coverage for skip decoding and for ensuring skipped policies produce no evidence (and no title-validation errors).

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.