feat: integrate eppo module with android-sdk-framework (v4 migration 2/2)

[typotter]

Summary

• EppoClient extends AndroidBaseClient<Configuration, JsonNode> (was BaseEppoClient directly)
• JacksonConfigurationParser: 2-param ConfigurationParser with parseFlagConfig + buildConfig(FlagConfigResponse, ...)
• OkHttpEppoClient: implements EppoConfigurationClient interface
• Example module: GsonConfigurationParser, GsonConfigurationCodec, CustomClientActivity
• Removes old ConfigurationStore, BaseCacheFile, ConfigCacheFile (moved to framework)
• Bumps :eppo to 5.0.0-SNAPSHOT, sdk-common-jvm to 4.0.0

Depends on #260.

Test plan

• Unit tests pass: ./gradlew :eppo:test
• Connected tests pass (46 tests): ./gradlew :eppo:connectedDebugAndroidTest
• Example app installs and runs: ./gradlew :example:installDebug

[typotter]

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📥 Commits

Reviewing files that changed from the base of the PR and between e83b8bc and 9040aa0.

📒 Files selected for processing (30)

• android-batteries-included-notes.md
• eppo/build.gradle
• eppo/src/androidTest/java/cloud/eppo/android/EppoClientTest.java
• eppo/src/androidTest/java/cloud/eppo/android/TestConfigCacheFile.java
• eppo/src/androidTest/java/cloud/eppo/android/helpers/AssignmentTestCase.java
• eppo/src/androidTest/java/cloud/eppo/android/helpers/AssignmentTestCaseDeserializer.java
• eppo/src/main/java/cloud/eppo/android/BaseCacheFile.java
• eppo/src/main/java/cloud/eppo/android/ConfigCacheFile.java
• eppo/src/main/java/cloud/eppo/android/ConfigurationStore.java
• eppo/src/main/java/cloud/eppo/android/EppoClient.java
• eppo/src/main/java/cloud/eppo/android/JacksonConfigurationParser.java
• eppo/src/main/java/cloud/eppo/android/OkHttpEppoClient.java
• eppo/src/main/java/cloud/eppo/android/PrecomputedCacheFile.java
• eppo/src/main/java/cloud/eppo/android/dto/adapters/BanditParametersResponseDeserializer.java
• eppo/src/main/java/cloud/eppo/android/dto/adapters/DateSerializer.java
• eppo/src/main/java/cloud/eppo/android/dto/adapters/EppoModule.java
• eppo/src/main/java/cloud/eppo/android/dto/adapters/EppoValueDeserializer.java
• eppo/src/main/java/cloud/eppo/android/dto/adapters/EppoValueSerializer.java
• eppo/src/main/java/cloud/eppo/android/dto/adapters/FlagConfigResponseDeserializer.java
• example/build.gradle
• example/src/main/AndroidManifest.xml
• example/src/main/java/cloud/eppo/androidexample/Constants.java
• example/src/main/java/cloud/eppo/androidexample/CustomClientActivity.java
• example/src/main/java/cloud/eppo/androidexample/GsonConfigurationCodec.java
• example/src/main/java/cloud/eppo/androidexample/GsonConfigurationParser.java
• example/src/main/java/cloud/eppo/androidexample/HeaderInjectingEppoClient.java
• example/src/main/java/cloud/eppo/androidexample/MainActivity.java
• example/src/main/java/cloud/eppo/androidexample/SecondActivity.java
• example/src/main/res/layout/activity_main.xml
• example/src/main/res/values/strings.xml

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