Adding exported functions for few of the windows errors.

[Prince Pereira (princepereira)]

Added exported functions to validate few of the windows errors.

[Copilot]

Pull request overview

This PR expands hcn’s Windows error-classification helpers by adding additional exported predicates for common HCN HRESULTs and introduces a unit test to validate these predicates (including behavior through fmt.Errorf("%w", ...) wrapping).

Changes:

• Add new ErrorCode constants for additional HCN error codes (network/endpoint/port not found, invalid IP).
• Add new exported Is* helper functions that classify HcnError instances by those codes.
• Add a Windows-only unit test covering the helper predicates (including wrapped errors).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
hcn/hcnerrors.go	Adds new HCN error-code constants and new exported Is* helper predicates.
hcn/hcnerrors_unit_test.go	Adds Windows-only unit tests for the new (and existing) error-classification helpers, including wrapped-error cases.

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[Copilot]

Pull request overview

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

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

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[Prince Pereira (princepereira)]

/cc David Schott (@daschott) , sbangari

[Copilot]

Pull request overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

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[Copilot]

Prince Pereira (@princepereira) I've opened a new pull request, #27, to work on those changes. Once the pull request is ready, I'll request review from you.