gio: add page (#16622)

* gio: add page

* Update pages/linux/gio.md

Co-authored-by: Managor <42655600+Managor@users.noreply.github.com>

---------

Co-authored-by: Managor <42655600+Managor@users.noreply.github.com>

pages/linux/gio.md

@@ -0,0 +1,25 @@
+# gio
+
+> Handle local and virtual files (GVfs).
+> Part of GLib used in GNOME-based systems.
+> More information: <https://manpages.ubuntu.com/manpages/focal/man1/gio.1.html>.
+
+- Open a file with the default application (e.g. PDF, image):
+
+`gio open {{path/to/file}}`
+
+- List files in a directory:
+
+`gio list {{path/to/directory}}`
+
+- Show information about a file:
+
+`gio info {{path/to/file}}`
+
+- Copy a file:
+
+`gio copy {{path/to/source}} {{path/to/destination}}`
+
+- Send a file to the trash (reversible):
+
+`gio trash {{path/to/file}}`