Add an AndroidX App Startup Initializer that only captures the application
Context on Android (never triggers native init), plus a new
MMKV.Companion.initialize(logLevel) overload that uses it. This matches the
explicit-but-Context-free initialize() contract every other MMKV platform
(iOS/Windows/POSIX/HarmonyOS) already has. Existing Context-taking overloads
are unchanged.
Closes#1689
Fix Android and iOS KMP API parity, empty-byte handling, handler behavior, and runtime version metadata. Harden standalone native interop and Maven Central publication, add smoke tests and publishing documentation, and validate the published package on a physical iPhone.