[winml] [P2] Multiple brand spellings in use (`WML`, `WinML`, `winml`, `Windows ML`, `ModelKit`)

Severity: P2
Command: winml

Category: Naming Consistency — pick one canonical product name and use it everywhere.

Repro:

uv run winml --help
uv run winml --version
uv run winml export --help

Actual: Five different forms appear in user-visible output:

• winml --help first line: WML ModelKit - Accelerate Model Deployment on WinML. (uses WML and WinML in the same sentence).
• winml --version prints: winml, version 0.0.2 (lowercase winml).
• winml export --help first line: Export HuggingFace model to ONNX format with HTP. (no brand).
• winml inspect panel header reads WinML Inference Class.
• winml sys table headers read Windows ML for the OS service and winml for the CLI.

Expected: Pick one canonical capitalization (e.g. WinML ModelKit for the product, winml only as the literal command name) and use it in every place a user can read it: top-level docstring, every subcommand docstring, --version output, every panel/table title, README.md, and pyproject.toml. Concretely:

• Replace WML ModelKit → WinML ModelKit in the top-level docstring.
• Make winml --version print WinML ModelKit, version 0.0.2 (winml CLI).

Why it matters: Users searching docs/issues for the product name need one term. Marketing/legal usually require one canonical capitalization too.