refactor(react-grid): switch to column extensions in LocalSorting

[kvet]

BREAKING CHANGES:

We removed the getColumnCompare property from the LocalSorting plugin to improve API consistency. Now, use the columnExtension property to specify individual column sorting options.

Before:

const columns = [{ name: 'field' }, { name: 'field2' }];
const fieldCompare = /* custom sort compare */;
const getColumnCompare = (columnName) => {
  if (name === 'field') return fieldCompare;
};

<Grid columns={columns}>
  <LocalSorting getColumnCompare={getColumnCompare} />
</Grid>

After:

const columns= [{ name: 'field' }, { name: 'field2' }];
const fieldCompare = /* custom sort compare */;
const localSortingColumnExtensions = [
  { columnName: 'field', compare: fieldIdentity },
];

<Grid columns={columns}>
  <LocalSorting columnExtensions={localSortingColumnExtensions} />
</Grid>

[SergeyAlexeev]

Should we change getColumnCompare to columnCompare?

[kvet]

I left the getColumnCompare name in order to make it consistent across local processing plugins.

[YanaOrlova]

Looks good