pw-cli: add page (#8029)

* pw-cli: add page

Signed-off-by: Martin Matous <m@matous.dev>

* Update pages/linux/pw-cli.md

Co-authored-by: Emily Grace Seville <emilyseville7cf@gmail.com>

* Update pages/linux/pw-cli.md

Co-authored-by: Emily Grace Seville <emilyseville7cf@gmail.com>

Co-authored-by: Emily Grace Seville <emilyseville7cf@gmail.com>

pages/linux/pw-cli.md

@@ -0,0 +1,16 @@
+# pw-cli
+
+> The PipeWire Command Line Interface.
+> More information: <https://docs.pipewire.org/page_man_pw_cli_1.html>.
+
+- Print all nodes (sinks and sources) along with their IDs:
+
+`pw-cli list-objects Node`
+
+- Print information about an object with a specific ID:
+
+`pw-cli info {{4}}`
+
+- Print all objects' information:
+
+`pw-cli info all`