Grid does not support clr-col-auto

**Describe the bug**
When you set Col = Col.Auto it results in clr-col (auto size to available space) instead of clr-col-auto (auto size to content)

**To Reproduce**
Steps to reproduce the behavior:
1. Use the Grid
2. Add a GridColumn with Col="Col.Auto"
3. See error

**Environment**
 - Blazority Version 1.0.4
 - .NET Core Version 6
 - Browser N/A


