shield: pcb wire keys

shield/shield.kicad_pro

@@ -123,7 +123,7 @@
       },
       "rules": {
         "max_error": 0.005,
-        "min_clearance": 0.0,
+        "min_clearance": 0.1,
         "min_connection": 0.0,
         "min_copper_edge_clearance": 0.0,
         "min_groove_width": 0.0,
@@ -219,6 +219,10 @@
         {
           "diameter": 0.0,
           "drill": 0.0
+        },
+        {
+          "diameter": 0.45,
+          "drill": 0.3
         }
       ],
       "zones_allow_external_fillets": false
@@ -471,7 +475,7 @@
     "classes": [
       {
         "bus_width": 12,
-        "clearance": 0.2,
+        "clearance": 0.1,
         "diff_pair_gap": 0.25,
         "diff_pair_via_gap": 0.25,
         "diff_pair_width": 0.2,