Resolve "Ajout de la passe à rugosité de fond: cas d'un radier incliné"

Closes #658 (closed), #664 (closed)

src/app/calculators/rugofond/config.json

-[
-    {
-        "id": "fs_hydraulique",
-        "type": "fieldset",
-        "fields": [
-            "Q",
-            "Z1"
-        ]
-    },
-    {
-        "id": "fs_geometry_crete",
-        "type": "fieldset",
-        "fields": [
-            "L",
-            "Cd"
-        ]
-    },
-    {
-        "id": "fs_geometry_rampe",
-        "type": "fieldset",
-        "fields": [
-            {
-                "id": "If",
-                "help": "hsl/pente.html"
-            },
-            "d65",
-            "a"
-        ]
-    },
-    {
-        "id": "fs_type",
-        "type": "fieldset",
-        "fields": [
-            "ZF1",
-            {
-                "id": "ZD1",
-                "allowEmpty": true
-            },
-            {
-                "id": "ZR1",
-                "allowEmpty": true
-            },
-            {
-                "id": "Nb",
-                "allowEmpty": true
-            }
-        ]
-    }
-]