move input club keyboards into vendor folder (#15788)

keyboards/input_club/ergodox_infinity/keymaps/rask/README.md

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+# rask's Infinity ErgoDox Layout
+
+A basic ErgoDox layout that follows regular-ish QWERTY where it
+makes sense.
+
+![ErgoDox Layout](https://i.imgur.com/jYDInaY.png)
+
+## Features
+
+-   Regular QWERTY alphas and symbols (apart from `[]{}\|` and shifted `/?`)
+-   Regular numrow to make Fn-F-row simpler
+-   CapsLock Fn1 with F-row behind it
+-   Media controls and mouse controls on Fn2
+-   Dedicated arrows
+
+## Building and flashing
+
+Follow the main Infinity ErgoDox guide but use the following layout:
+
+    $ sudo make ergodox_infinity:rask