Summary

This pull request introduces a new feature to the Cell class: the SetHyperlink method. This method allows users to programmatically add hyperlinks to cells with optional tooltips.

Key Changes

• Added the SetHyperlink method in the Cell class:
  • Supports adding a hyperlink to a cell in A1 notation.
  • Includes an optional tooltip that appears when hovering over the hyperlink.
• Implemented a helper method GetWorksheetPart to locate the WorksheetPart containing the current cell.
• Integrated OpenXML SDK features:
  • Utilized Hyperlink and Hyperlinks elements for hyperlink management.
  • Used OpenXML relationship handling to associate hyperlinks with worksheets.
• Included comprehensive XML documentation for both methods.

Example Usage

using (Workbook wb = new Workbook("path/to/your/file.xlsx"))
{
    Worksheet sheet = wb.Worksheets[0];
    Cell cell = sheet.Cells["B10"];
    cell.PutValue("Click Here");
    cell.SetHyperlink("https://example.com", "Visit Example Website");
    wb.Save("path/to/your/file.xlsx");
}

Fixes #25 
Closes #25