relocate 40percent.club boards to new parent folder (#4380)

* Initial move of 40percent.club boards to common parent folder.

* Refactor readme files to be consistent

* Refactor readme files to be consistent - fix make command examples.

* Refactor readme files to be consistent - align readme filenames.

* Refactor readme files to be consistent - fix repo url.

* Disable Community keymap builds as they are currently failing due to missing functionality

* Move more of 40percent.club boards to common parent folder.

* Refactor readme files to be consistent - align readme filenames.

* Refactor readme files to be consistent - fix make command examples.

keyboards/40percentclub/nano/info.json

@@ -0,0 +1,12 @@
+{
+  "keyboard_name": "Nano",
+  "url": "",
+  "maintainer": "qmk",
+  "width": 4,
+  "height": 2,
+  "layouts": {
+    "LAYOUT": {
+      "layout": [{"x":0, "y":0}, {"x":1, "y":0}, {"x":2, "y":0}, {"x":3, "y":0}, {"x":0, "y":1}, {"x":1, "y":1}, {"x":2, "y":1}, {"x":3, "y":1}]
+    }
+  }
+}