Migrate build target markers to keyboard.json - DE (#23515)

keyboards/doio/kb16/rev1/keyboard.json

@@ -0,0 +1,33 @@
+{
+    "usb": {
+        "device_version": "0.0.1"
+    },
+    "features": {
+        "bootmagic": true,
+        "mousekey": true,
+        "extrakey": true,
+        "nkro": true,
+        "oled": true,
+        "rgb_matrix": true,
+        "encoder": true,
+        "grave_esc": false,
+        "space_cadet": false,
+        "magic": false
+    },
+    "matrix_pins": {
+        "cols": ["F5", "F4", "F1", "F0", "B7"],
+        "rows": ["D5", "D4", "D3", "D2"]
+    },
+    "encoder": {
+        "rotary": [
+            {"pin_a": "F7", "pin_b": "E6"},
+            {"pin_a": "C7", "pin_b": "C6"},
+            {"pin_a": "D7", "pin_b": "D6"}
+        ]
+    },
+    "ws2812": {
+        "pin": "F6"
+    },
+    "processor": "atmega32u4",
+    "bootloader": "atmel-dfu"
+}