trayer: add page (#10441)

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>

pages/linux/trayer.md

@@ -0,0 +1,28 @@
+# trayer
+
+> A lightweight GTK-2 based systray.
+> More information: <https://github.com/sargon/trayer-srg>.
+
+- Run `trayer`:
+
+`trayer`
+
+- Position `trayer` to a specific edge:
+
+`trayer --edge {{left|right|top|bottom}}`
+
+- Provide a specific height and width of the panel (in pixels):
+
+`trayer --width {{10}} --height {{32}}`
+
+- Provide the width of the panel in pixels or percentages:
+
+`trayer --widthtype {{pixel|percent}} --width {{72}}`
+
+- Align `trayer` to a specific direction:
+
+`trayer --align {{left|center|right}}`
+
+- Provide spacing between icons (in pixels):
+
+`trayer --iconspacing {{10}}`