com.derdilla.bloodPressureApp update

Required

• The app complies with the inclusion criteria
• All related fdroiddata and RFP issues have been referenced in this merge request
• Builds with fdroid build

Strongly Recommended

• The upstream app source code repo contains the app metadata (summary/description/images/changelog/etc) in a Fastlane or Triple-T folder structure
• Releases are tagged

Suggested

• External repos are added as git submodules instead of srclibs
• Multiple apks for native code

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The repository structure of the app changed in the last release, which will make it impossible for f-droid to build with the current script. Additionally, the way the app is build changed a bit since it was first added and this MR tries to get the f-droid build closer to the main build.

Changes

• performs the build in the new app folder
• using the beta version of Flutter
• "obfuscate" the build to reduce app size
• decodes versions from the pubspec file, which was misconfigured when the app was added