Add GPX mime-type

Add application/gpx+xml as specified at:
http://www.topografix.com/gpx.asp
https://en.wikipedia.org/wiki/GPS_Exchange_Format

https://bugs.freedesktop.org/show_bug.cgi?id=94154

freedesktop.org.xml.in

@@ -6208,6 +6208,13 @@ command to generate the output files.
     <glob pattern="*.geojson"/>
     <glob pattern="*.geo.json"/>
   </mime-type>
+  <mime-type type="application/gpx+xml">
+    <_comment>GPX geographic data</_comment>
+    <acronym>GPX</acronym>
+    <expanded-acronym>GPS Exchange Format</expanded-acronym>
+    <sub-class-of type="application/xml"/>
+    <glob pattern="*.gpx"/>
+  </mime-type>
   <mime-type type="application/x-ica">
     <_comment>Citrix ICA settings file</_comment>
     <acronym>ICA</acronym>

tests/list

@@ -475,6 +475,8 @@ googleearth.kml application/vnd.google-earth.kml+xml ox
 # Created using geojson.io
 test.geojson application/vnd.geo+json ox
 test.geo.json application/vnd.geo+json ox
+# Copid from https://en.wikipedia.org/wiki/GPS_Exchange_Format
+test.gpx ox
 # Copied from http://bugs.freedesktop.org/show_bug.cgi?id=15260
 test.gnd application/gnunet-directory
 # Copied from https://bugs.freedesktop.org/show_bug.cgi?id=27441

tests/test.gpx

+<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
+
+<gpx xmlns="http://www.topografix.com/GPX/1/1" xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3" xmlns:gpxtpx="http://www.garmin.com/xmlschemas/TrackPointExtension/v1" creator="Oregon 400t" version="1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensionsv3.xsd http://www.garmin.com/xmlschemas/TrackPointExtension/v1 http://www.garmin.com/xmlschemas/TrackPointExtensionv1.xsd">
+  <metadata>
+    <link href="http://www.garmin.com">
+      <text>Garmin International</text>
+    </link>
+    <time>2009-10-17T22:58:43Z</time>
+  </metadata>
+  <trk>
+    <name>Example GPX Document</name>
+    <trkseg>
+      <trkpt lat="47.644548" lon="-122.326897">
+        <ele>4.46</ele>
+        <time>2009-10-17T18:37:26Z</time>
+      </trkpt>
+      <trkpt lat="47.644548" lon="-122.326897">
+        <ele>4.94</ele>
+        <time>2009-10-17T18:37:31Z</time>
+      </trkpt>
+      <trkpt lat="47.644548" lon="-122.326897">
+        <ele>6.87</ele>
+        <time>2009-10-17T18:37:34Z</time>
+      </trkpt>
+    </trkseg>
+  </trk>
+</gpx>