Fix and rename appdata file to metainfo (#668)

Author: leigh123linux

data/meson.build

@@ -9,8 +9,8 @@ desktop = custom_target(
 
 appdata = custom_target(
     'appdata',
-    input: 'xed.appdata.xml.in',
-    output: 'xed.appdata.xml',
+    input: 'org.x.editor.metainfo.xml.in',
+    output: 'org.x.editor.metainfo.xml',
     command: [intltool_merge, '-x', '-u', po_dir, '@INPUT@', '@OUTPUT@'],
     install: true,
     install_dir: join_paths(datadir, 'metainfo'),

data/xed.appdata.xml.in renamed to data/org.x.editor.metainfo.xml.in

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <component type="desktop">
- <id>xed.desktop</id>
+ <id>org.x.editor.desktop</id>
  <metadata_license>CC0-1.0</metadata_license>
  <project_license>GPL-2.0+</project_license>
  <name>Xed</name>