[planner] doap: Add myself (Mart Raudsepp) as a maintainer

[Alexandre Franke <afranke src gnome org>]

commit 98e41dde9e9e84f61067f5b20bea4af245f92ab3
Author: Mart Raudsepp <leio gentoo org>
Date:   Wed Jun 2 13:06:09 2021 +0300

    doap: Add myself (Mart Raudsepp) as a maintainer

 planner.doap | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/planner.doap b/planner.doap
index f9f0cd0c..fb0f8fd4 100644
--- a/planner.doap
+++ b/planner.doap
@@ -12,6 +12,13 @@
   <bug-database rdf:resource="https://gitlab.gnome.org/GNOME/planner/issues/"; />
   <!-- <category rdf:resource="http://api.gnome.org/doap-extensions#productivity"; /> -->
 
+  <maintainer>
+    <foaf:Person>
+      <foaf:name>Mart Raudsepp</foaf:name>
+      <foaf:mbox rdf:resource="mailto:leio gentoo org" />
+      <gnome:userid>mraudsepp</gnome:userid>
+    </foaf:Person>
+  </maintainer>
   <maintainer>
     <foaf:Person>
       <foaf:name>Alexandre Franke</foaf:name>