title: How to merge 2 CSV files based on filename
body: <p>I have 2 CSV files:</p>
  
  <pre><code>1234ABC.stats.csv
  name,value1,value1
  
  1234ABC.csv
  value2,value2,value2
  </code></pre>
  
  <p>Both of these files have only 1 line in them.</p>
  
  <p>They both have no header, and are in the same directory with no other file types.</p>
  
  <p>How can I add the content from the second file onto the end of the line from the first?</p>
  
  <p>desired output:</p>
  
  <pre><code>name,value1,value1,value2,value2,value2
  </code></pre>