[Feature] Support TextAlignment in DataGridTextColumn to allow align the text in rows to right

[quangtrang1111]

Describe the problem this feature would solve

Hi all,
I am implementing my app with a table has number rows.
So, I need to align the number value in rows to right.

Describe the solution

I added optional property named TextAlignment in the class DataGridTextColumn.

Additional context & Screenshots

Here is the result after I implemented TextAlignment

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