feat: add IMsfHandler interface for MSF message handling

Author: cwuom

app/src/main/java/moe/ono/loader/hookapi/IMsfHandler.kt

@@ -0,0 +1,10 @@
+package moe.ono.loader.hookapi
+
+import android.content.Intent
+import com.tencent.qphone.base.remote.ToServiceMsg
+import de.robv.android.xposed.XC_MethodHook
+
+interface IMsfHandler {
+    fun onHandle(param: XC_MethodHook.MethodHookParam, intent: Intent, toServiceMsg: ToServiceMsg)
+    val cmd: String
+}