…ter'

AND-20185 Upgrade with latest Pdfium

Closes AND-20185

See merge request mobile/android/feature-libraries/pdfiumandroid!1

* submit the pre-built binaries for libpng and libfreetype2
* Add build-3rdparty.sh script to build the 2 libraries from source code

…ter'

AND-20185 rebuild libpng and libfreetype2

Closes AND-20185

See merge request mobile/android/feature-libraries/pdfiumandroid!2

* build everything(libpng, freetype2, PdfiumAndroid) and deploy the .so files to MEGA code.
  * `bash build.sh  --build-png --build-freetype --deploy-to-mega PATH/TO/MEGA/ANDROID/CODE`
* only build PdfiumAndroid and deploy the .so files to MEGA code.
  * `bash build.sh  --deploy-to-mega PATH/TO/MEGA/ANDROID/CODE`

- Updated to Android SDK 35 and NDK 28
- Fixed BuildConfig generation for AGP 8.9.2+
- Added Java 17 support via gradle.properties
- Fixed native library packaging in AAR
- Updated build.sh to copy libjniPdfium.so correctly
- Added 16KB page size support for Android 15
- Updated README with comprehensive build instructions
- Fixed jniLibs.srcDir path for proper .so inclusion
- Added VERSION_NAME to BuildConfig for library modules
- Removed deprecated package attribute from AndroidManifest.xml

- Bump version from 1.9.0 to 2.0.0 due to significant build layer changes
- Configure AAR filename to include version: PdfiumAndroid-2.0.0-release.aar
- Update README with version 2.0.0 references and rationale
- Add libraryVariants configuration for versioned output filename