Added Bargal Gardemont character sheet and needed alteration for him

alterations/TATOO_GARDEMONT.json

@@ -0,0 +1,18 @@
+{
+    "type": "com.pixelized.shared.lwa.model.alteration.AlterationJsonV1",
+    "id": "TATOO_GARDEMONT",
+    "metadata": {
+        "name": "Tatouage des Gardemont",
+        "description": "Tatouage de la famille Gardemont",
+        "icon": "https://bg3.wiki/w/images/2/2d/Map_Tutorial_Map_Icon.png"
+    },
+    "tags": [
+        "TATOO"
+    ],
+    "fields": [
+        {
+            "fieldId": "PP",
+            "expression": "-(5)"
+        }
+    ]
+}