Initial beta version with nuget package

What's Changed

• Update to .net6.0 by @TheDayIsMyEnemy in #1
• Added nuspec by @aeagle in #2

New Contributors

• @TheDayIsMyEnemy made their first contribution in #1
• @aeagle made their first contribution in #2

Full Changelog: https://github.com/aeagle/blazor-spaces/commits/0.0.1-beta.2