Flehrad Tradestation Refactor (#13897)

* add license headers

Apache 2.0 per the included `license` file.

* info.json: use human-friendly formatting

* refactor keymaps

- split `default` keymap into `default` and `tradestation` keymaps (one for each layout)
- remove boilerplate functions
- apply four-space indent

* partial clean up of rules.mk

- update section header comment blocks

keyboards/flehrad/tradestation/info.json

@@ -6,10 +6,46 @@
     "height": 4.5,
     "layouts": {
         "LAYOUT_tradestation": {
-            "layout": [{"x":0, "y":0},{"x":1.125, "y":0},{"x":2.25, "y":0},{"x":3.375, "y":0},{"x":0, "y":1.1},{"x":1.125, "y":1.1},{"x":2.25, "y":1.1},{"x":3.375, "y":1.1},{"x":0, "y":2.25, "w":2},{"x":2.25, "y":2.25, "w":2},{"x":0, "y":3.5, "w":2},{"x":2.25, "y":3.5, "w":2}]
+            "layout": [
+                {"x":0, "y":0},
+                {"x":1.125, "y":0},
+                {"x":2.25, "y":0},
+                {"x":3.375, "y":0},
+
+                {"x":0, "y":1.1},
+                {"x":1.125, "y":1.1},
+                {"x":2.25, "y":1.1},
+                {"x":3.375, "y":1.1},
+
+                {"x":0, "y":2.25, "w":2},
+                {"x":2.25, "y":2.25, "w":2},
+
+                {"x":0, "y":3.5, "w":2},
+                {"x":2.25, "y":3.5, "w":2}
+            ]
         },
         "LAYOUT_ortho_4x4": {
-            "layout": [{"x":0, "y":0},{"x":1.125, "y":0},{"x":2.25, "y":0},{"x":3.375, "y":0},{"x":0, "y":1.1},{"x":1.125, "y":1.1},{"x":2.25, "y":1.1},{"x":3.375, "y":1.1},{"x":0, "y":2.25},{"x":1.125, "y":2.25},{"x":2.25, "y":2.25},{"x":3.375, "y":2.25},{"x":0, "y":3.5},{"x":1.125, "y":3.5},{"x":2.25, "y":3.5},{"x":3.375, "y":3.5}]
+            "layout": [
+                {"x":0, "y":0},
+                {"x":1.125, "y":0},
+                {"x":2.25, "y":0},
+                {"x":3.375, "y":0},
+
+                {"x":0, "y":1.1},
+                {"x":1.125, "y":1.1},
+                {"x":2.25, "y":1.1},
+                {"x":3.375, "y":1.1},
+
+                {"x":0, "y":2.25},
+                {"x":1.125, "y":2.25},
+                {"x":2.25, "y":2.25},
+                {"x":3.375, "y":2.25},
+
+                {"x":0, "y":3.5},
+                {"x":1.125, "y":3.5},
+                {"x":2.25, "y":3.5},
+                {"x":3.375, "y":3.5}
+            ]
         }
     }
 }