refactor(react-grid): extract table column extension

[kvet]

BREAKING CHANGES:

In order to improve API readability, we extracted the width and align column properties that the Table and VirtualTable plugins handle into a separate property. Now, the width and align properties in the Grid columns are no longer supported. Use a TableColumnExtension instead:

Before:

const columns= [{ name: 'field', width: 100 }, { name: 'field2' }];

<Grid columns={columns}>
  <Table />
</Grid>

After:

const columns= [{ name: 'field1' }, { name: 'field2' }];
const tableColumnExtensions = [{ columnName: 'field1', width: 100 }];

<Grid columns={columns}>
  <Table columnExtensions={tableColumnExtensions} />
</Grid>

[SergeyAlexeev]

The column.name field is used twice and can be extracted.

[SergeyAlexeev]

Should we add one more test that checks that only the width and align fields will be applied?

[kvet]

No, I think that these tests are enough

[SergeyAlexeev]

Why there isn't the width extension as in the prev version?