feat: lifecycle Method added for android

[tjkang]

in MainActivity.java it should be added as below

import co.squaretwo.ironsource.RNIronSourceModule;
......
   @Override
    public void onResume() {
        super.onResume();
        RNIronSourceModule.onResume(this);
    }

    @Override
    public void onPause() {
        super.onPause();
        RNIronSourceModule.onPause(this);
    }
......