Verify apk releases

[KKA11010]

This pull request introduces a verification process for APK releases. The changes include an automated script that updates the verification files that ensures the authenticity and integrity of the released apk's.

The current process for releasing a production APK looks like this:

• Create a release tag: "v*"
• Download the APK from expo and paste it into the folder utils/verification locally
• run the release script locally: utils/release.sh
• commit and push the changes
• attach the downloaded apk to the release notes, provide the apk hash and link to the readme section about verifying a release.

This is not an optimal workflow... Thoughts or improvements are very welcome!

Changes

• Providing APK release hashes
• Providing detach-signed files
• Added a script (release.sh) to handle the update of verification files.
• The script calculates checksums, generates detached signatures for APK files, and updates the hash list.
• Updated the README with detailed instructions on how to verify an APK