refacto: Adding i18n support with FR and EN as base

frontend/locales/fr.json

@@ -0,0 +1,56 @@
+{
+  "app": {
+    "title": "Pharmaco Kinetics",
+    "version": "v1.00 • Dr Georges Mion"
+  },
+  "nav": {
+    "mode_esk": "ESKETAMINE",
+    "mode_rac": "RACÉMIQUE",
+    "calculator": "Calculateur",
+    "export_pdf": "Exporter PDF",
+    "raz": "RAZ"
+  },
+  "patient": {
+    "title": "Caractéristiques Patient",
+    "weight": "Poids (kg)",
+    "age": "Âge (ans)",
+    "height": "Taille (cm)",
+    "concentration": "Concentration Produit (mg/mL)"
+  },
+  "models": {
+    "title": "Modèles Pharmacocinétiques"
+  },
+  "timeline": {
+    "title": "Saisie Chronologique Doses & Perfusion (0 - 300 min)",
+    "scroll_hint": "Défilement horizontal 👉",
+    "bolus": "Bolus (mg)",
+    "perf": "Perf (mg/kg/h)"
+  },
+  "calculator": {
+    "title": "Calculateur & Conversions de Doses",
+    "patient_weight": "Poids du patient",
+    "drug_conc": "Concentration",
+    "bolus_header": "Conversion Bolus",
+    "total_dose": "Dose totale (mg)",
+    "relative_dose": "Dose relative (mg/kg)",
+    "infusion_header": "Conversion Perfusion",
+    "rate_mgkgh": "Débit (mg/kg/h)",
+    "rate_ugkgmin": "Débit (µg/kg/min)"
+  },
+  "zones": {
+    "inactive": "Inactif",
+    "anti_hyperalgesic": "Anti-Hyperalgésique",
+    "analgesia": "Analgésie",
+    "psychedelic": "Psychédélique",
+    "emergence": "Émergence",
+    "narcosis": "Narcose",
+    "excessive": "Excessif"
+  },
+  "pdf": {
+    "title": "KétaPK - Rapport de Simulation Pharmacocinétique",
+    "date": "Date de simulation : ",
+    "mode": "Mode sélectionné : ",
+    "patient_info": "Patient : Poids {weight} kg | Âge {age} ans | Taille {height} cm",
+    "disclaimer": "Ce document est généré par KétaPK Web. Destiné uniquement à l'enseignement."
+  }
+}