pw-mididump: add page (#18707)

Co-authored-by: Managor <42655600+Managor@users.noreply.github.com>
Co-authored-by: Dylan <145150333+dmmqz@users.noreply.github.com>

pages/linux/pw-mididump.md

@@ -0,0 +1,20 @@
+# pw-mididump
+
+> Dump MIDI messages to `stdout`.
+> More information: <https://docs.pipewire.org/page_man_pw-mididump_1.html>.
+
+- Listen for and dump all incoming MIDI events:
+
+`pw-mididump`
+
+- Dump MIDI events from a specific file:
+
+`pw-mididump {{path/to/file.mid}}`
+
+- Connect to a specific remote PipeWire instance:
+
+`pw-mididump {{[-r|--remote]}} {{remote_instance_name}}`
+
+- Display help:
+
+`pw-mididump {{[-h|--help]}}`