yakuake: add page (#15834)

pages/linux/yakuake.md

@@ -0,0 +1,32 @@
+# yakuake
+
+> A drop-down terminal for KDE.
+> More information: <https://manned.org/man/yakuake>.
+
+- Start up Yakuake:
+
+`yakuake`
+
+- Toggle Yakuale visibility:
+
+`<F12>`
+
+- Toggle fullscreen mode:
+
+`<F11>`
+
+- Open a new tab:
+
+`<Ctrl Shift t>`
+
+- Switch between tabs:
+
+`<Shift {{ArrowLeft|ArrowRight}}>`
+
+- Create terminal splits:
+
+`<Ctrl {{)|(}}>`
+
+- Switch between splist:
+
+`{{<Ctrl Tab>|<Ctrl Shift Tab>}}`