title: Pass key to vuex getter to get diferent state
body: <p>In vuex store there is many similar states:</p>
  <pre><code>const state = {
    count: 0,
    count2: 1,
    count3: 2
  };
  </code></pre>
  <p>and for every state there is a corresponding getter:</p>
  <pre><code>const getters = {
    getCount: (state) =&gt; state.count,
    getCount2: (state) =&gt; state.count2,
    getCount3: (state) =&gt; state.count3,
  };
  </code></pre>
  <p>Is there a way to turn these 3 in one dynamic getter who would accept the key and get the corresponding data.</p>