title: Generate *.dist-info/entry_points.txt with poetry
body: <p>I want to generate an entry_points.txt inside the wheel, with poetry.</p>
  <pre><code>[distutils.setup_keywords]
  toto = toto:toto
  </code></pre>
  <p>with setup.py, I can use</p>
  <pre><code>setup(
      ...
      entry_points = {
          'distutils.setup_keywords': ['toto = toto:toto'],
      }
      ...
  )
  </code></pre>
  <p>With setup.cfg and pbr, I can use</p>
  <pre><code>[entry_points]
  distutils.setup_keywords =
      toto = toto:toto
  </code></pre>
  <p>But, how I can do the same with Poetry?</p>