refactor: remove unused Stammdaten categories - #173

The TargetFrameworkVersion (Android API level 35) is higher than the targetSdkVersion (34). Please increase the `android:targetSdkVersion` in the `AndroidManifest.xml` so that the API levels match.

Android 16 will require 16 KB page sizes, shared library 'libSkiaSharp.so' does not have a 16 KB page size. Please inform the authors of the NuGet package 'SkiaSharp.NativeAssets.Android' version '2.88.9' which contains 'runtimes/android-x64/native/libSkiaSharp.so'. See https://developer.android.com/guide/practices/page-sizes for more details.

Android 16 will require 16 KB page sizes, shared library 'libqpdf.so' does not have a 16 KB page size. Please inform the authors of the NuGet package 'QuestPDF' version '2026.8.0' which contains 'runtimes/linux-x64/native/libqpdf.so'. See https://developer.android.com/guide/practices/page-sizes for more details.

Android 16 will require 16 KB page sizes, shared library 'libQuestPdfSkia.so' does not have a 16 KB page size. Please inform the authors of the NuGet package 'QuestPDF' version '2026.8.0' which contains 'runtimes/linux-x64/native/libQuestPdfSkia.so'. See https://developer.android.com/guide/practices/page-sizes for more details.

Android 16 will require 16 KB page sizes, shared library 'libHarfBuzzSharp.so' does not have a 16 KB page size. Please inform the authors of the NuGet package 'HarfBuzzSharp.NativeAssets.Android' version '7.3.0.3' which contains 'runtimes/android-x64/native/libHarfBuzzSharp.so'. See https://developer.android.com/guide/practices/page-sizes for more details.

Android 16 will require 16 KB page sizes, shared library 'libSkiaSharp.so' does not have a 16 KB page size. Please inform the authors of the NuGet package 'SkiaSharp.NativeAssets.Android' version '2.88.9' which contains 'runtimes/android-arm64/native/libSkiaSharp.so'. See https://developer.android.com/guide/practices/page-sizes for more details.

Android 16 will require 16 KB page sizes, shared library 'libqpdf.so' does not have a 16 KB page size. Please inform the authors of the NuGet package 'QuestPDF' version '2026.8.0' which contains 'runtimes/linux-arm64/native/libqpdf.so'. See https://developer.android.com/guide/practices/page-sizes for more details.

Android 16 will require 16 KB page sizes, shared library 'libQuestPdfSkia.so' does not have a 16 KB page size. Please inform the authors of the NuGet package 'QuestPDF' version '2026.8.0' which contains 'runtimes/linux-arm64/native/libQuestPdfSkia.so'. See https://developer.android.com/guide/practices/page-sizes for more details.

Android 16 will require 16 KB page sizes, shared library 'libHarfBuzzSharp.so' does not have a 16 KB page size. Please inform the authors of the NuGet package 'HarfBuzzSharp.NativeAssets.Android' version '7.3.0.3' which contains 'runtimes/android-arm64/native/libHarfBuzzSharp.so'. See https://developer.android.com/guide/practices/page-sizes for more details.