Enable export operation to have own schema

[SteveL-MSFT]

PR Summary

Enables resources supporting export to optionally have separate schema from get, set, and test.

In the resource manifest under the export operation, there is now an optional schema property that can be:

command - same as normal schema which runs a command that returns JSON schema
embedded - same as normal schema which has embedded JSON schema
noFiltering - this string value indicates that the resource doesn't support filtering, so any user input is discarded before calling the resource

New test resource added to validate these scenarios particularly where the name property is an enum, but the export allows name to be an arbitrary string to allow passing in wildcards.

PR Context

Fix #1232

[Copilot]

Pull request overview

This PR implements support for an optional export.schema override in resource manifests, allowing resources to validate export input using a different schema than get/set/test (including a noFiltering mode), and adds test resources + Pester coverage to validate wildcard filtering scenarios (Issue #1232).

Changes:

• Extend the resource manifest model to allow export.schema with command, embedded, or noFiltering.
• Update export invocation to validate export input against the export-specific schema (or discard input for noFiltering).
• Add dsctest fixtures/resources and a new Pester test to validate command/embedded/noFiltering export schema behaviors.

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tools/dsctest/src/main.rs	Wires up a new export-schema subcommand and exposes schemas used by the new test resources.
tools/dsctest/src/export_schema.rs	Adds a test implementation that exercises export filtering with wildcard-capable input.
tools/dsctest/src/args.rs	Adds CLI surface for export-schema and schema generation for export/get vs export input schemas.
tools/dsctest/dsctest.dsc.manifests.json	Adds three new test resources covering export schema via command, embedded schema, and noFiltering.
tools/dsctest/Cargo.toml	Adds regex dependency for wildcard filtering in the test helper.
lib/dsc-lib/src/dscresources/resource_manifest.rs	Introduces ExportSchemaKind and adds schema to the manifest export operation model.
lib/dsc-lib/src/dscresources/command_resource.rs	Implements export-specific schema resolution and export-input validation / noFiltering behavior.
lib/dsc-lib-jsonschema/.versions.json	Bumps jsonschema patch version metadata (V3_2_2).
dsc/tests/dsc_resource_export.tests.ps1	Adds Pester tests validating export input behavior across the new test resources.
Cargo.lock	Locks the new regex dependency for dsctest.

[Copilot]

Pull request overview

Copilot reviewed 9 out of 10 changed files in this pull request and generated 1 comment.