* the way to deal with local changes on checkout branch page
* the way to deal with local changes and should checkout after created on new branch page
* should fetch without tags on fetch page
* the way to deal with local changes and should fetch without tags on pull page
* should push all tags on push
* remove dotnet-tool.json because the project does not rely on any dotnet tools.
* remove Directory.Build.props because the solution has only one project.
* move src/SourceGit to src. It's not needed to put all sources into a subfolder of src since there's only one project.
