Add new exported function `GetCellPixelsWithCoordinates`

[t4traw]

PR Details

Added GetCellPixelsWithCoordinates Function to Determine Cell Dimensions in Pixels

Related Issue

https://github.com/qax-os/excelize/issues/1813

Motivation and Context

To adjust the aspect ratio displayed in individual Excel cells, it is necessary to tweak ScaleX or ScaleY, but there isn't an appropriate public function available for this calculation. Although public functions like GetRowHeight and GetColWidth exist, they do not return values in pixels, and there's a discrepancy with the pixel calculations used within drawingResize in AddPicture. DrawingResize (using getRowHeight and getColWidth) seems to accurately calculate sizes for the most part.

-----GetRowHeight, GetColWidth-----
cellWidth:  306
cellHeight:  333
-----drawingResize(getRowHeight, getColWidth)-----
cellWidth:  360
cellHeight:  264

Therefore, the pixel function used in drawingResize has been extracted as a public function.

How Has This Been Tested

Types of changes

• [ ] Docs change / refactoring / dependency upgrade
• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.