Adds custom background + decentrala logo

Cantor_MX/Cantor_MX.kicad_prl

@@ -1,10 +1,12 @@
 {
   "board": {
-    "active_layer": 0,
+    "active_layer": 36,
     "active_layer_preset": "",
     "auto_track_width": true,
     "hidden_netclasses": [],
-    "hidden_nets": [],
+    "hidden_nets": [
+      "+3V3"
+    ],
     "high_contrast_mode": 0,
     "net_color_mode": 1,
     "opacity": {
@@ -63,9 +65,15 @@
       35,
       36
     ],
-    "visible_layers": "fffffff_ffffffff",
+    "visible_layers": "000102b_80000001",
     "zone_display_mode": 0
   },
+  "git": {
+    "repo_password": "",
+    "repo_type": "",
+    "repo_username": "",
+    "ssh_key": ""
+  },
   "meta": {
     "filename": "Cantor_MX.kicad_prl",
     "version": 3