refactor: move all provider modules under providers/ directory

[kirich1409]

Summary

• Moves datastore-provider, firebase-provider, javaprefs-provider, nsuserdefaults-provider, and sharedpreferences-provider under a single providers/ directory
• Gradle module paths (:datastore-provider etc.) are preserved via projectDir overrides in settings.gradle.kts — no other build files changed

Test plan

• Verify ./gradlew build succeeds
• Verify ./gradlew spotlessCheck passes
• Verify all module references resolve correctly (:datastore-provider, :firebase-provider, etc.)

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR consolidates the various *-provider modules under a new top-level providers/ directory while preserving their Gradle module paths via projectDir overrides in settings.gradle.kts.

Changes:

• Updated settings.gradle.kts to keep module coordinates (e.g., :firebase-provider) while pointing them to providers/* directories.
• Added/relocated provider implementations and associated build/API/proguard files under providers/.
• Added/relocated provider test suites (Android/JVM/iOS) under the new module locations.

Reviewed changes

Copilot reviewed 1 out of 33 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
settings.gradle.kts	Preserves module paths by overriding projectDir to providers/*.
providers/sharedpreferences-provider/src/test/kotlin/dev/androidbroadcast/featured/sharedpreferences/SharedPreferencesProviderConfigTest.kt	SharedPreferences local provider tests (Robolectric).
providers/sharedpreferences-provider/src/main/kotlin/dev/androidbroadcast/featured/sharedpreferences/ValueSaversBuiltIn.kt	Built-in SharedPreferences value serializers.
providers/sharedpreferences-provider/src/main/kotlin/dev/androidbroadcast/featured/sharedpreferences/ValueSavers.kt	Registry for type-to-saver mapping.
providers/sharedpreferences-provider/src/main/kotlin/dev/androidbroadcast/featured/sharedpreferences/ValueSaver.kt	Saver interface for SharedPreferences persistence.
providers/sharedpreferences-provider/src/main/kotlin/dev/androidbroadcast/featured/sharedpreferences/SharedPreferencesProviderConfig.kt	SharedPreferences-backed LocalConfigValueProvider implementation.
providers/sharedpreferences-provider/proguard-rules.pro	Module ProGuard rules scaffold.
providers/sharedpreferences-provider/consumer-rules.pro	Consumer ProGuard rules for the module.
providers/sharedpreferences-provider/build.gradle.kts	Android library build + publishing + coverage config for the module.
providers/sharedpreferences-provider/api/sharedpreferences-provider.api	Binary-compatibility API surface snapshot.
providers/nsuserdefaults-provider/src/iosTest/kotlin/dev/androidbroadcast/featured/nsuserdefaults/NSUserDefaultsConfigValueProviderTest.kt	iOS tests for NSUserDefaults-backed local provider.
providers/nsuserdefaults-provider/src/iosMain/kotlin/dev/androidbroadcast/featured/nsuserdefaults/NSUserDefaultsConfigValueProvider.kt	NSUserDefaults-backed LocalConfigValueProvider implementation.
providers/nsuserdefaults-provider/build.gradle.kts	KMP build + publishing config for the iOS provider module.
providers/javaprefs-provider/src/test/kotlin/dev/androidbroadcast/featured/javaprefs/JavaPreferencesConfigValueProviderTest.kt	JVM tests for Preferences-backed local provider.
providers/javaprefs-provider/src/main/kotlin/dev/androidbroadcast/featured/javaprefs/JavaPreferencesConfigValueProvider.kt	Java Preferences-backed LocalConfigValueProvider implementation.
providers/javaprefs-provider/build.gradle.kts	JVM build + publishing config for the module.
providers/javaprefs-provider/api/javaprefs-provider.api	Binary-compatibility API surface snapshot.
providers/firebase-provider/src/test/kotlin/dev/androidbroadcast/featured/firebase/FirebaseConfigValueProviderTest.kt	Unit tests for Firebase Remote Config provider fetch behavior.
providers/firebase-provider/src/main/kotlin/dev/androidbroadcast/featured/firebase/FirebaseConfigValueProvider.kt	Firebase Remote Config-backed RemoteConfigValueProvider.
providers/firebase-provider/src/main/kotlin/dev/androidbroadcast/featured/firebase/FetchException.kt	Exception type for fetch failures.
providers/firebase-provider/src/main/kotlin/dev/androidbroadcast/featured/firebase/Converters.kt	Converter registry for Firebase typed extraction.
providers/firebase-provider/src/main/kotlin/dev/androidbroadcast/featured/firebase/Converter.kt	Converter interface + built-in numeric converters.
providers/firebase-provider/proguard-rules.pro	Module ProGuard rules scaffold.
providers/firebase-provider/consumer-rules.pro	Consumer ProGuard rules for Firebase provider.
providers/firebase-provider/build.gradle.kts	Android library build + publishing + coverage config for Firebase provider.
providers/firebase-provider/api/firebase-provider.api	Binary-compatibility API surface snapshot.
providers/firebase-provider/.gitignore	Module-local ignore for build outputs.
providers/datastore-provider/src/commonTest/kotlin/dev/androidbroadcast/featured/datastore/DataStoreEnumTest.kt	Common tests for DataStore provider converter support.
providers/datastore-provider/src/commonMain/kotlin/dev/androidbroadcast/featured/datastore/DataStoreConfigValueProvider.kt	DataStore-backed LocalConfigValueProvider implementation.
providers/datastore-provider/build.gradle.kts	KMP + Android build + publishing + coverage config for DataStore provider.
providers/datastore-provider/api/jvm/datastore-provider.api	JVM API surface snapshot.
providers/datastore-provider/api/android/datastore-provider.api	Android API surface snapshot.
providers/datastore-provider/README.md	Module usage documentation.