SSHDConfig: move filepath from _metadata to _filepath property

[Copilot]

filepath was only configurable under the DSC metadata block, but since it directly affects resource behavior (which file to read/write), it belongs in properties.

Changes

• canonical_properties.rs: Replaced Metadata variant with Filepath ("_filepath")
• inputs.rs: Removed Metadata struct; filepath: Option<PathBuf> is now a direct field on CommandInfo
• repeat_keyword.rs: RepeatInput / RepeatListInput use _filepath field instead of _metadata
• util.rs: build_command_info extracts _filepath from top-level JSON input
• get.rs / set.rs: Updated all cmd_info.metadata.filepath references to cmd_info.filepath; output now includes _filepath directly
• Resource manifests (sshd_config, sshd-subsystem, sshd-subsystemList): Schema updated — _metadata object replaced with _filepath string property
• Tests: All test inputs updated from _metadata = @{ filepath = ... } to _filepath = ...

Before / After

# Before
- name: sshdconfig
  type: Microsoft.OpenSSH.SSHD/sshd_config
  metadata:
    filepath: C:\path\to\sshd_config

# After
- name: sshdconfig
  type: Microsoft.OpenSSH.SSHD/sshd_config
  properties:
    _filepath: C:\path\to\sshd_config

[tgauth]

@copilot resolve the conflicts with main

[Copilot]

@copilot resolve the conflicts with main

Merged main into this branch. The only conflict was in resources/sshdconfig/tests/sshdconfig.set.tests.ps1 — main had added new Windows-specific test contexts that still used the _metadata style. I updated those to use _filepath (consistent with this PR) and completed the merge in commit 6f96f8de.

[tgauth]

@copilot fix the clippy warnings/errors - look at the build script to see the exact clippy configuration

[Copilot]

@copilot fix the clippy warnings/errors - look at the build script to see the exact clippy configuration

The merge with origin/main inadvertently re-introduced old metadata.filepath references in set.rs (via conflict resolution favouring main's version), which causes compile errors. Fixing those now alongside the clippy issues.

[tgauth]

@copilot revert the cargo.lock changes, close the PR, and open a PR with the same changes against the PowerShell/DSC fork

[Copilot]

@tgauth I've opened a new pull request, #6, to work on those changes. Once the pull request is ready, I'll request review from you.