title: How to add country flags icon in front of ion-select-option?
body: <p>I'm creating Ionic 4 plus Angular app, in that i'm using ion-select dropdown for country.now i want to add country flags icons in front of country name.below code shows what i'm try.</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
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  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;ion-select class="dropdownselection" placeholder="PROVINCIA" interface="popover"&gt;
                    &lt;ion-select-option value="A Coruña"&gt;
                      &lt;ion-icon src="/assets/icons/man.svg"&gt;&lt;/ion-icon&gt; A Coruña
                    &lt;/ion-select-option&gt;
                    &lt;ion-select-option value="Álava"&gt;Álava&lt;/ion-select-option&gt;
                    &lt;ion-select-option value="Albacete"&gt;Albacete&lt;/ion-select-option&gt;
                    &lt;ion-select-option value="red"&gt;D&lt;/ion-select-option&gt;
                  &lt;/ion-select&gt;</code></pre>
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  <p><a href="https://i.stack.imgur.com/fmwVP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fmwVP.png" alt=" i want flag icon before country name"></a></p>