Thank you soooo much @aarnent, this solved my issue.
For the archive I have also added the font definition and upper call to the solution.
#show heading.where(level: 1): it => [
#let dx = calc-margin(page.margin, (page.width, page.height))
#place(
image(
"images/Image1.1.jpg",
width: 1.5cm // Change as you wish
),
dx: - dx
)
#text(font: "Liberation Serif",
size: 23pt,
lang: "de",
region: "at",
upper(it)
)
]