wf-recorder: add page (#15004)

Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>

pages/linux/wf-recorder.md

@@ -0,0 +1,17 @@
+# wf-recorder
+
+> Screencast for Wayland optionally with audio.
+> By default you need to end the process with Ctrl-C.
+> More information: <https://github.com/ammen99/wf-recorder>.
+
+- Record storing to an MP4 file:
+
+`wf-recorder --file={{output.mp4}}`
+
+- Record including audio, both with mic and system sounds:
+
+`wf-recorder --audio --file={{/path/to/file_with_audio.webm}}`
+
+- Select and record a portion of the screen using `slurp`, outputting to default `recording.mp4`:
+
+`wf-recorder -g "$(slurp)"`