Add mimetype: Add STL model/stl (.stl)

Author: hugovk

Doc/whatsnew/3.14.rst

@@ -977,6 +977,7 @@ mimetypes
   * Add PHP ``application/x-httpd-php`` (``.php``)
   * Add RAR ``application/vnd.rar`` (``.rar``)
   * Add RPM ``application/x-rpm`` (``.rpm``)
+  * Add STL ``model/stl`` (``.stl``)
   * Add Windows Media Video ``video/x-ms-wmv`` (``.wmv``)
 
   (Contributed by Hugo van Kemenade in :gh:`129965`.)

Lib/mimetypes.py

@@ -619,6 +619,7 @@ def _default_mime_types():
         '.nws'    : 'message/rfc822',
         '.gltf'   : 'model/gltf+json',
         '.glb'    : 'model/gltf-binary',
+        '.stl'    : 'model/stl',
         '.css'    : 'text/css',
         '.csv'    : 'text/csv',
         '.html'   : 'text/html',

Lib/test/test_mimetypes.py

@@ -275,6 +275,7 @@ def check_extensions():
                 ("message/rfc822", ".eml"),
                 ("model/gltf+json", ".gltf"),
                 ("model/gltf-binary", ".glb"),
+                ("model/stl", ".stl"),
                 ("text/html", ".html"),
                 ("text/plain", ".txt"),
                 ("text/rtf", ".rtf"),