New Keyboard: Sentraq Number Pad RGB DIY Kit (#5047)

* Added QMK Config for Sentraq Number Pad keyboard.

* Sentraq Number Pad documentation cleanup.

* mend

* Added json for configurator.

* Small documentation tweaks.

* Updated the layouts to use the default layouts that match.

* Uncommended user level functions in keymap, left custom keycode/macro code commented but documented why.

* Switched to #pragma once from #ifndef structure in header file.

* Moved Sentraq number pad to sentraq creator directory.

* Renamed sentraq_number_pad to number_pad now that it's nested in the sentraq directory.

* Updated references inside the files for the keyboard rename and nesting.

keyboards/sentraq/number_pad/info.json

@@ -0,0 +1,29 @@
+{
+  "keyboard_name": "Sentraq Number Pad",
+  "maintainer": "qmk",
+  "url": "https://sentraq.com/collections/kits/products/number-pad-rgb-kit",
+  "width": 4,
+  "height": 5,
+  "layouts": {
+    "LAYOUT_numpad_5x4": {
+      "keycount": 17,
+      "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, "h":2},
+        {"x":0, "y":2}, {"x":1, "y":2}, {"x":2, "y":2},
+        {"x":0, "y":3}, {"x":1, "y":3}, {"x":2, "y":3}, {"x":3, "y":3, "h":2},
+        {"x":0, "y":4, "w":2}, {"x":2, "y":4}
+      ]
+    },
+    "LAYOUT_ortho_5x4": {
+      "keycount": 20,
+      "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},
+        {"x":0, "y":2}, {"x":1, "y":2}, {"x":2, "y":2}, {"x":3, "y":2},
+        {"x":0, "y":3}, {"x":1, "y":3}, {"x":2, "y":3}, {"x":3, "y":3},
+        {"x":0, "y":4}, {"x":1, "y":4}, {"x":2, "y":4}, {"x":3, "y":4}
+      ]
+    }
+  }
+}