Document.AddPicture Imports Images Sideways

[LucoseGlucose]

Issue Description

Document.AddPicture Imports Images Sideways. They are not in the correct orientation even if I rotate the images themselves

Steps to Reproduce

1. Create new go project
2. Add godocx
3. Create new document
4. Add Picture and save

Expected Behavior

The picture should appear in the correct orientation

Actual Behavior

The picture appears sideways

Environment Details

• GoDocx Library Version: v0.1.5
• Go Version: 1.24.1
• Operating System: Windows
• Word Processor Used: Word
• Word Processor Version: Version 2502 Build 16.0.18526.20168

Sample Code

doc, _ := godocx.NewDocument()
doc.AddPicture("20250325_175712.jpg", units.Inch(3), units.Inch(4))
doc.SaveTo("doc.docx")

Additional Information

doc.docx
20250325_175712.jpg

[gomutex]

I'll look into this and update here once I have more info.

[prr123]

My observation from a word file:
The transform group for a picture (godocx/dml/dmlpic
/pic.go) has an attribute "rot" for rotation that is not implemented.
see line 87
Currently:
type TransformGroup struct {
Extent *dmlct.PSize2D xml:"ext,omitempty"
Offset *Offset xml:"off,omitempty"
}

should be:
type TransformGroup struct {
Rotation uint64 xml:"xfrm, attr, omitempty"
Extent *dmlct.PSize2D xml:"ext,omitempty"
Offset *Offset xml:"off,omitempty"
}

The word/document.xml file:
<a:xfrm rot="5400000">
<a:off x="0" y="0"/>
<a:ext cx="3559571" cy="2373048"/>
</a:xfrm>
also see https://www.datypic.com/sc/ooxml/e-a_xfrm-4.html