title: How can I change only specific query params in current route vue-router?
body: <p>I try to make pagination in Nuxt Js project, 
  so how can I change only page query params in my current route, and keep other query params with there values 
  I have 3 query params : </p>
  
  <pre><code>      this.count = this.$route.query.count ?? 8
        this.page = this.$route.query.page ?? 1
        this.sort_by = this.$route.query.sort_by ?? 'latest'
  </code></pre>
  
  <pre><code>  &lt;li class="pagination-link" v-for="(page, key) in computed.lastPage" :key="key"
          :class="{ 'active': page === computed.currentPage }"&gt;
        &lt;nuxt-link :to="'?page='+page" append
                   :class="{'current-link' : computed.currentPage === page}"&gt;
          {{ page }}
        &lt;/nuxt-link&gt;
      &lt;/li&gt;
  </code></pre>