[gimp] desktop: add a <developer_name> tag.

[Jehan <jehanp src gnome org>]

commit 257ada495fbf70621c5dc2b1302f0c76ec0b95d9
Author: Jehan <jehan girinstud io>
Date:   Thu Jun 25 11:19:20 2020 +0200

    desktop: add a <developer_name> tag.
    
    It just says "The GIMP team" so it's kind of redundant/useless, but I
    noticed that Flathub would just display an empty "Developer" section
    because the tag is absent. Well at least it emphasizes the
    community-developed side of GIMP.

 desktop/org.gimp.GIMP.appdata.xml.in.in | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/desktop/org.gimp.GIMP.appdata.xml.in.in b/desktop/org.gimp.GIMP.appdata.xml.in.in
index eaf426a61c..7ac130e683 100644
--- a/desktop/org.gimp.GIMP.appdata.xml.in.in
+++ b/desktop/org.gimp.GIMP.appdata.xml.in.in
@@ -12,6 +12,7 @@
   -->
   <metadata_license>CC0-1.0</metadata_license>
   <project_license>GPL-3.0+ AND LGPL-3.0+</project_license>
+  <developer_name>The GIMP team</developer_name>
   <_name>GNU Image Manipulation Program</_name>
   <_summary>Create images and edit photographs</_summary>
   <description>