Refactor type generator

* Allows for generating top-level types for any embedded struct so
  that sub-types can be properly instantiated from calling code
  * Specifying `-no-embedded-types` will generate top-level types
    rather than embedding the struct

* Refactored "Device" API
  * All fields set to `omitempty` because it describes all possible
    device types, so effectively any field could be omitted any time
  * Fixed `get` call for "Device" API; replacing `rest` with `stat`

* Generated `get` and `update` calls for `Setting*` APIs

* Added `5.14.23` JSON files

fields/5.14.23/Map.json

@@ -0,0 +1,15 @@
+{
+    "name": "",
+    "mapTypeId": "satellite|roadmap|hybrid|terrain",
+    "tilt": "[\\d]+",
+    "type": "designerMap|imageMap|googleMap",
+    "upp": "^([\\d]+[.]?[\\d]*)$",
+    "unit": "m|f",
+    "lat": "^([-]?[\\d]+[.]?[\\d]*([eE][-+]?[\\d]+)?)$",
+    "lng": "^([-]?[\\d]+[.]?[\\d]*([eE][-+]?[\\d]+)?)$",
+    "selected": "true|false",
+    "zoom": "[\\d]+",
+    "offset_top": "^([-]?[\\d]+[.]?[\\d]*)$",
+    "offset_left": "^([-]?[\\d]+[.]?[\\d]*)$",
+    "opacity": "^(0(\\.[\\d]{1,2})?|1)$|^$"
+}