Add coroutines-based API with StateFlow extensions #83

Job	Run time
build (ubuntu-latest, ./gradlew :kmp-socketio:linuxX64Test --info)	2m 39s
build (macos-latest, ./gradlew :kmp-socketio:macosX64Test --info && ./kmp-socketio/src/webTest/st...	5m 1s
build (macos-latest, on, ./gradlew :kmp-socketio:jvmTest --info)	12m 52s
build (windows-latest, ./gradlew :kmp-socketio:mingwX64Test --info)	6m 4s
build (macos-latest, on, ./gradlew :kmp-socketio:jvmTest --info)	13m 2s
build (macos-latest, ./gradlew :kmp-socketio:macosX64Test --info && ./kmp-socketio/src/webTest/st...	5m 1s
build (ubuntu-latest, ./gradlew :kmp-socketio:linuxX64Test --info)	2m 39s
build (windows-latest, ./gradlew :kmp-socketio:mingwX64Test --info)	6m 4s
	53m 22s

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