Function duplicateColumn

duplicateColumn(
    ws: Worksheet,
    sourceColNumber: number,
    targetColNumber: number,
): void
Duplicates a column by inserting a new column at the target position with the same values.
Parameters
- ws: Worksheet
  The worksheet containing the columns.
- sourceColNumber: number
  The number of the column to copy from (1-based index).
- targetColNumber: number
  The number where the new column should be inserted (1-based index).
Returns void
Example
```
duplicateColumn(worksheet, 2, 5);
```
- Defined in src/excel/excel.tsx:96