feat: display age nearby the birth date

locales/en/home.json

@@ -4,6 +4,7 @@
     "description": "Developer Full Stack Junior • Passionate about High-Tech",
     "full-name": "Full name",
     "birth-date": "Birth date",
+    "years-old": "years old",
     "nationality": "Nationality",
     "description-bottom": "I am self-taught in Computer Science by following online trainings and I am also a student at the university following the French training \"BUT Informatique\" (first year)."
   },