Refactor URL parsing to support SSH remotes

[hymccord]

No description provided.

[Copilot]

Pull Request Overview

This PR refactors URL parsing to support SSH remotes by replacing hardcoded GitHub URL parsing with a dedicated GitUri class. The changes enable the extension to handle both HTTPS and SSH Git remote URLs.

• Replaced hardcoded URL string parsing with a robust GitUri parser
• Changed FindGitFolder to TryFindGitFolder with proper boolean return semantics
• Added comprehensive SSH and HTTPS URL parsing support

Reviewed Changes

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

File	Description
src/ToolWindows/GHActionsToolWindow.xaml.cs	Updated to use new TryFindGitFolder method with boolean return
src/Helpers/RepoInfo.cs	Refactored git folder discovery and URL parsing to use GitUri class
src/Helpers/GitUri.cs	New class providing comprehensive Git URL parsing for SSH and HTTPS remotes
src/GitHubActionsVS.csproj	Added GitUri.cs to project compilation

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[hymccord]

This may help with #26 as it was the same symptoms happening to me, though my stack traces indicated errors with SSH.

It also may help move towards supporting GitHub Enterprise but I have no way of testing that. There are a few other areas to touch like the credentials. Out of scope for the PR though.