Age and Gender Detection App - v0.0.1

• Migrated from XML to Jetpack Compose
• Migrated onActivityResult to ActivityResultsContract
• Updated workflows/build_apk.yml to build and release APK
• Migrated from Groovy build scripts to KTS
• Updated themes.xml
• Updated build.gradle.kts (project-level)
• Updated package name from com.ml.projects.age_genderdetection to com.ml.shubham0204.age_genderdetection