[WSLC] Enable portMappings for WSLC (TCP host->container forwarding)

[SohamDas2021]

📖 Description

This change enables port mappings for TCP hosts; we call WSLC SDK API WslcSetContainerSettingsPortMappings and wire the portMappings in the runner.

🔗 References

🔍 Validation

✅ Checklist

• Signed the Contributor License Agreement
• Linked to an issue
• Updated documentation (if applicable)
• Updated Copilot instructions (if build, architecture, or conventions changed)

📋 Issue Type

• Bug fix
• Feature
• Task

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[Copilot]

Pull request overview

Enable WSLC host→container TCP port forwarding by wiring experimental.wslc.portMappings through the Rust config parser into the WSLC SDK container-settings call, with accompanying schema/docs/test updates.

Changes:

• Add WSLC SDK bindings + runner support for WslcSetContainerSettingsPortMappings and WslcContainerPortMapping.
• Strengthen port-mapping config parsing/validation (required fields, normalization, duplicate detection; explicit UDP rejection with a clear message).
• Add/update dev schema, docs, and local/SDK tests to cover TCP port-mapping usage and UDP rejection.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/scripts/run_wslc_all_tests.ps1	Adds two WSLC network test configs to the local WSLC test runner.
tests/configs/wslc_port_mapping_tcp.json	New WSLC config exercising a single TCP port-mapping entry.
tests/configs/wslc_port_mapping_multiple.json	New WSLC config exercising multiple TCP port-mapping entries.
src/core/wxc_common/src/config_parser.rs	Parses/validates WSLC portMappings (required fields, protocol normalization, UDP rejection, duplicate detection) + updates unit tests.
src/backends/wslc/common/src/wslc_bindings.rs	Introduces FFI types and function pointer for WslcSetContainerSettingsPortMappings, plus layout test.
src/backends/wslc/common/src/wsl_container_runner.rs	Applies port mappings to WSLC container settings before container creation.
sdk/tests/integration/wslc-e2e.test.ts	Adds E2E coverage for TCP forwarding and UDP rejection; improves assertions/timeout.
sdk/src/types.ts	Expands documentation for portMappings/protocol in SDK types.
schemas/dev/mxc-config.schema.0.8.0-dev.json	Updates WSLC portMappings schema to TCP-only + adds default [].
docs/wsl/wsl-container-support-plan.md	Documents WSLC portMappings API + notes UDP E_NOTIMPL limitation and parser behavior.
docs/schema.md	Adds portMappings example to the main schema doc snippet.

[MGudgin]

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[MGudgin]