CLI: Initialize template support

[AmelBawa-msft]

Summary of the Pull Request

Enable using Go templates from C++

wslc ps -a --format 'Name is {{.Name}} and state is {{.State}}'
Name is demo and state is 3
Name is demo-2 and state is 3

PR Checklist

• Closes: Link to issue #xxx
• Communication: I've discussed this with core contributors already. If work hasn't been agreed, this work might be rejected
• Tests: Added/updated if needed and all pass
• Localization: All end user facing strings can be localized
• Dev docs: Added/updated if needed
• Documentation updated: If checked, please file a pull request on our docs repo and link it here: #xxx

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

[Copilot]

Pull request overview

Adds initial “template” output support to the WSLC CLI by introducing a Go-based template renderer (built as a Windows DLL) and wiring it into wslc container list --format ... so users can format container output beyond table and json.

Changes:

• Add FormatType::Template and update container list to render per-container output via a new TemplateRenderer bridge.
• Introduce a Go c-shared DLL (render.dll) exposing RenderGoTemplate/FreeMemory, plus CMake build steps to build/link/copy it.
• Relax --format parsing so values other than json/table map to template mode.

Reviewed changes

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

Show a summary per file

File	Description
src/windows/wslc/tools/gotemplate/render.go	Go c-shared implementation that parses JSON and executes a Go text/template.
src/windows/wslc/tools/gotemplate/render.def	Export list for the Go-built DLL functions.
src/windows/wslc/tasks/ContainerTasks.cpp	Adds FormatType::Template handling for container list to render templates per container.
src/windows/wslc/services/ContainerModel.h	Extends FormatType enum with Template.
src/windows/wslc/core/TemplateRenderer.h	Declares C++ wrapper API for template rendering.
src/windows/wslc/core/TemplateRenderer.cpp	Implements the C++ ↔ Go bridge and error handling.
src/windows/wslc/commands/ContainerListCommand.cpp	Removes command-specific format validation (now relies on common validation).
src/windows/wslc/commands/ContainerCommand.h	Removes ValidateArgumentsInternal override declaration for container list.
src/windows/wslc/arguments/ArgumentValidation.cpp	Changes format parsing to return Template for non-json/table values.
src/windows/wslc/CMakeLists.txt	Adds custom build/link/copy steps to build the Go template renderer DLL and link it into wslc.

[Copilot]

Pull request overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 11 comments.

[Copilot]

Pull request overview

Copilot reviewed 13 out of 13 changed files in this pull request and generated 8 comments.

[Copilot]

Pull request overview

Copilot reviewed 15 out of 15 changed files in this pull request and generated 8 comments.

[OneBlue]

This is clever ! If we easily call into a go dll, this makes supporting templates a lot easier.

One thing I'll recommend though is that given that are most likely not going to make changes to that dll very often, would to build it separately in https://github.com/microsoft/WSL-deps and consume via a nuget package, so that we don't need to rebuild it locally on every build

[OneBlue]

It will also probably be easier to build the dll in that repo, since we can use msbuild directly and not have to go through cmake

[benhillis]

FreeGoString(rawOutput) is called unconditionally without null check, and if TryRenderGoTemplate throws, rawOutput leaks. Use a wil::scope_exit for cleanup.