upgraded to ppm appinfo v3

appinfo.yml

@@ -1,9 +1,15 @@
-mainunit: nginx.service
-mainunitfile: nginx.service.j2
+version: 3
+mainunit: nginx
+enableunits:
+  - nginx.service
 templatefiles:
   - src: nginx.conf.j2
     dest: ~/nginx.conf
-backuptype: none
+  - src: nginx.service.j2
+    dest: ~/.config/systemd/user/nginx.service
+plugins:
+  - type: builtin
+    name: backups_none
 configdefinition:
   "$id": "nginx config"
   "$schema": "http://json-schema.org/draft-07/schema#"