qtile: add page (#9132)

pages/linux/qtile.md

@@ -0,0 +1,24 @@
+# qtile
+
+> A full-featured, hackable tiling window manager written and configured in Python.
+> More information: <https://docs.qtile.org/en/latest/manual/commands/shell/index.html>.
+
+- Start the window manager, if it is not running already (should ideally be run from `.xsession` or similar):
+
+`qtile start`
+
+- Check the configuration file for any compilation errors (default location is  `~/.config/qtile/config.py`):
+
+`qtile check`
+
+- Show current resource usage information:
+
+`qtile top --force`
+
+- Open the program `xterm` as a floating window on the group named `test-group`:
+
+`qtile run-cmd --group {{test-group}} --float {{xterm}}`
+
+- Restart the window manager:
+
+`qtile cmd-obj --object cmd --function restart`