Move matrix config to info.json, part 5 (#20003)

Co-authored-by: Nick Brassel <[email protected]>

keyboards/splitish/info.json

@@ -8,6 +8,11 @@
         "pid": "0x6464",
         "device_version": "0.0.1"
     },
+    "matrix_pins": {
+        "cols": ["F4", "F5", "F6", "F7", "B1", "B3", "C6", "D4", "D0", "D1", "D2", "D3"],
+        "rows": ["B4", "B5", "B2", "B6"]
+    },
+    "diode_direction": "COL2ROW",
     "processor": "atmega32u4",
     "bootloader": "caterina",
     "layouts": {