qownnotes: add page (#12089)

* qownnotes: add page

---------

Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

pages/common/qownnotes.md

@@ -0,0 +1,21 @@
+# qownnotes
+
+> Markdown note-taking application.
+> Optionally integrates with the note-taking applications of Nextcloud and ownCloud.
+> More information: <https://www.qownnotes.org/getting-started/cli-parameters.html>.
+
+- Run in portable mode:
+
+`QOwnNotes --portable`
+
+- Dump settings and other information about the app and environment in GitHub Markdown:
+
+`QOwnNotes --dump-settings`
+
+- Specify a different context for settings and internal files:
+
+`QOwnNotes --session {{test}}`
+
+- Trigger a menu action after the application was started:
+
+`QOwnNotes --action {{actionShow_Todo_List}}`