Add ProtocolApi module

client/android/protocolApi/src/main/kotlin/Status.kt

@@ -0,0 +1,34 @@
+package org.amnezia.vpn.protocol
+
+import android.os.Bundle
+
+private const val IS_CONNECTED_KEY = "isConnected"
+
+@Suppress("DataClassPrivateConstructor")
+data class Status private constructor(
+    val isConnected: Boolean = false
+) {
+    private constructor(builder: Builder) : this(builder.isConnected)
+
+    class Builder {
+        var isConnected: Boolean = false
+            private set
+
+        fun setConnected(isConnected: Boolean) = apply { this.isConnected = isConnected }
+
+        fun build(): Status = Status(this)
+    }
+
+    companion object {
+        inline fun build(block: Builder.() -> Unit): Status = Builder().apply(block).build()
+    }
+}
+
+fun Bundle.putStatus(statistics: Status) {
+    putBoolean(IS_CONNECTED_KEY, statistics.isConnected)
+}
+
+fun Bundle.getStatus(): Status =
+    Status.build {
+        setConnected(getBoolean(IS_CONNECTED_KEY))
+    }