- Add FlutterOptimizelyLogger class implementing OPTLogger protocol
- Add constants for customLogger and loggerChannel
- Implement FlutterMethodChannel for invoking log method
- Add logger field to OptimizelyFlutterSdk constructor
- Initialize custom logger in OptimizelyClientWrapper
- Create LoggerBridge to handle log method calls
- Implement OptimizelyLogger interface and DefaultOptimizelyLogger class

- Update custom logger initialization in OptimizelyFlutterSdkPlugin
- Adjust logger channel setup in onDetachedFromEngine
- Refactor LoggerBridge to handle log calls from native Swift/Java code properly
- Ensure proper logging when no custom logger is set

- Rename 'OptimizelyLogger.dart' to 'flutter_logger.dart'
- Rename 'LoggerBridge.dart' to 'logger_bridge.dart'
- Modify imports in 'optimizely_client_wrapper.dart' to reflect changes in logger files

- Implement a custom logger class
- Define logLevel property with default debug level
- Define log method to print log messages with custom format

- Rename FlutterOptimizelyLogger to OptimizelyFlutterLogger in Android
- Rename FlutterOptimizelyLogger to OptimizelyFlutterLogger in iOS

- Remove unused log level property in CustomLogger
- Implement channel setter method in OptimizelyFlutterLogger
- Add guard clauses for levels and logger channel availability in log method
- Update channel invocation to happen on main thread
- Set log level in SwiftOptimizelyFlutterSdkPlugin based on parameters
- Simplify DefaultOptimizelyLogger log method
- Update log message formatting in logger bridge for consistency

- Add methods to expose converting log level, checking if a custom logger is set, retrieving the current logger, and resetting the logger state
- Implement a method for simulating method calls
- Add tests for maintaining logger state across multiple operations
- Include a test for handling logger replacement
- Create tests for edge cases including handling empty messages and special characters

- Define LOGGER_CHANNEL constant for OptimizelyFlutterLogger class
- Set up separate FlutterMethodChannel for outgoing log calls
- Update SwiftOptimizelyFlutterSdkPlugin to use the new logger channel

- Add DispatchQueue.main.async for each method call to ensure platform channel messages are sent on the correct thread

- Remove unnecessary comments and TODOs
- Replace direct print statements with AppLogger methods
- Refactor AppLogger to enhance flexibility and ease of use

- Remove comparison to Swift's DispatchQueue.main.async

- Remove import statement for 'log_level' that is no longer used
- Update import paths for 'flutter_logger' and 'optimizely_flutter_sdk'

test: update test cases in logger_test.dart

- Update test cases to use 'const MethodCall' for creating method calls
- Change null and empty arguments to be created and handled correctly
- Fix missing level or message argument handling scenarios
- Improve handling of invalid level data types in method calls

docs: add comments to improve code clarity in logger_test.dart

- Add comments explaining the purpose of each test group and case
- Include comments for the different scenarios being tested in each case

- Update log message format in CustomLogger class
- Refactor main thread dispatch logic for method channel calls in Utils.swift
- Enhance error handling and main thread dispatch in OptimizelyFlutterLogger.swift
- Modify method channel creation and task queue handling in SwiftOptimizelyFlutterSdkPlugin.swift

- Replace usage of static AppLogger class with separate logging functions
- Introduce individual logger functions for error, warning, info, and debug levels
- Create a default stand-alone logger instance to handle logging operations

- Test calling global logging functions without errors
- Test handling empty messages in global functions
- Test handling special characters in global functions
- Test handling rapid calls to global functions

- Add Kotlin support to build.gradle
- Update Java version compatibility
- Include Kotlin options for JVM target
- Implement FlutterLogbackAppender for logging
- Remove unused OptimizelyFlutterLogger class
- Refactor logger initialization in OptimizelyFlutterSdkPlugin
- Update MethodChannel for log messages in LoggerBridge

- Remove unused 'org.jetbrains.kotlin.android' plugin
- Remove 'kotlinOptions' block for JVM target compatibility update
- Add exclusion for 'androidsupportmultidexversion.txt' in packagingOptions

feat: add FlutterLogbackAppender for logging in Android

- Add new FlutterLogbackAppender class for logging
- Implement append method to handle log events
- Include mainThreadHandler for posting log data asynchronously
- Provide setChannel method for setting MethodChannel in FlutterLogbackAppender

refactor: simplify channel set in OptimizelyFlutterSdkPlugin.java

- Update channel set method to use static reference directly

- Remove logging statement for receiving method call
- Remove logging statement for processing log