Create a system to map between info.json and config.h/rules.mk (#11548)

* generate rules.mk from a json mapping

* generate rules.mk from a json mapping

* support for config.h from json maps

* improve the mapping system

* document the mapping system

* move data/maps to data/mappings

* fix flake8 errors

* fixup LED_MATRIX_DRIVER

* remove product and description from the vision_division keymap level

* reduce the complexity of generate-rules-mk

* add tests for the generate commands

* fix qmk doctor when submodules are not clean

keyboards/handwired/pytest/basic/info.json

@@ -0,0 +1,10 @@
+{
+  "maintainer": "qmk",
+  "layouts": {
+    "LAYOUT_custom": {
+      "layout": [
+        { "label": "KC_Q", "matrix": [0, 0], "w": 1, "x": 0, "y": 0 }
+      ]
+    }
+  }
+}