title: Use custom font in style attribute
body: <p>What I want to achieve is adding <code>style</code> attribute to my <code>axml</code> file with custom font loaded from <code>Asset</code>. </p>
  
  <p>I know I can load built-in fontface like this (<code>style.xml</code>):</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;resources&gt;
    &lt;style name="CodeFont" parent="@android:style/TextAppearance.Medium"&gt;
      &lt;item name="android:typeface"&gt;monospace&lt;/item&gt;
    &lt;/style&gt;
  &lt;/resources&gt;
  </code></pre>
  
  <p>And use it (<code>Main.axml</code>):</p>
  
  <pre><code>&lt;TextView
          style="@style/CodeFont"
          local:MvxBind="Text Hello" /&gt;
  </code></pre>
  
  <p>I know that I can also create <code>MyCustomTextView</code> extending <code>TextView</code> and setting font by <code>SetTypeface</code> method, but I would like to use custom font in <code>style</code> attribute. </p>
  
  <p>So something like:</p>
  
  <pre><code> &lt;resources&gt;
      &lt;style name="CodeFont" parent="@android:style/TextAppearance.Medium"&gt;
        &lt;item name="android:typeface"&gt;MyCustomFontLoadedFromAsset&lt;/item&gt;
      &lt;/style&gt;
   &lt;/resources&gt;
  </code></pre>
  
  <p>Is it possible (and how to do it)?</p>