Column Title增加模板功能，可以自定义显示RenderFragment

Referring to how the other components do it but MatSlider is ValueMax / ValueMin / Step & MatNumeric is Maximum, Minimum and Step.

I would like to see it consistent across the components or since we only have 2 instances of "Max/Min/Step" that I found we can refer to material.io for the tie breaker?

**Material-UI uses step, min, max for their Slider - Which I think is best and suggest

@kiwi179 proposes a lookup set for additional functionality

https://wellsb.com/csharp/aspnet/code-first-ef-core-lookup-table-blazor/
https://coding.abel.nu/2013/11/enums-and-lookup-tables-with-ef-code-first/

It would be great if there were a BSComboBox (a cross between a Text input and a dropdown, with text autocomplete).

With #153, I have laid out the foundation for this issue. Instead of the three sample projects, we now have a dual-mode blazor application that looks and feels similar to the official Chart.js samples.

Now we need your help!

If you want to contribute to this library and/or get to know ChartJs.Blazor, you can port one of the samples listed below a

I'd like the change the transparency of the overlay. This could be done by adding an option to change the class of the overlay.

Even though this isn't super critical, this might help with addressing https://stackoverflow.com/questions/57938081/blazor-preview-9-mono-wasm-memory-access-out-of-bounds-max-string-size-for-dotn

The mock JSRuntime should support being cast to IJSInProcessRuntime and IJSUnmarshalledRuntime by implementing the interfaces, and providing additional setup and verify methods.

Thank you very much for the excellent tools.
Is thw textbox support RTL direction, if not could you please add it.
Again thank you very much.