Phone screenshots (#132)

* clean up full_description.txt

* ratio up to 2.3

* add 4 screenshots

* add 3 missing screenshots

fastlane/metadata/android/en-US/full_description.txt

@@ -3,11 +3,8 @@
 <a href="https://github.com/venera-app/venera/releases"><img src="https://img.shields.io/github/v/release/venera-app/venera" alt="Download"></a>
 <a href="https://github.com/venera-app/venera/stargazers"><img src="https://img.shields.io/github/stars/venera-app/venera" alt="stars"></a>
 <a href="https://t.me/+Ws-IpmUutzkxMjhl"><img src="https://img.shields.io/badge/Telegram-2CA5E0?style=flat&amp;logo=telegram&amp;logoColor=white" alt="Telegram"></a></p>
-
 <p>A comic reader that support reading local and network comics.</p>
-
 <h2>Features</h2>
-
 <ul>
 <li>Read local comics</li>
 <li>Use javascript to create comic sources</li>
@@ -17,24 +14,16 @@
 <li>View comments, tags, and other information of comics if the source supports</li>
 <li>Login to comment, rate, and other operations if the source supports</li>
 </ul>
-
 <h2>Build from source</h2>
-
 <ol>
 <li>Clone the repository</li>
 <li>Install flutter, see <a href="https://flutter.dev/docs/get-started/install">flutter.dev</a></li>
 <li>Install rust, see <a href="https://rustup.rs/">rustup.rs</a></li>
 <li>Build for your platform: e.g. <code>flutter build apk</code></li>
 </ol>
-
 <h2>Create a new comic source</h2>
-
 <p>See <a href="https://github.com/venera-app/venera-configs">venera-configs</a></p>
-
 <h2>Thanks</h2>
-
 <h3>Tags Translation</h3>
-
 <p><a href="https://github.com/EhTagTranslation/Database"><img src="https://github-readme-stats.vercel.app/api/pin/?username=EhTagTranslation&amp;repo=Database" alt="Readme Card"></a></p>
-
 <p>The Chinese translation of the manga tags is from this project.</p>