🌐(i18n) add captions color settings translations

EN, FR, DE, NL for Accessibility > Captions > Font color / Background color.

src/frontend/src/locales/de/settings.json

@@ -126,6 +126,33 @@
           "medium": "Mittel",
           "large": "Groß"
         }
+      },
+      "fontColor": {
+        "label": "Schriftfarbe",
+        "options": {
+          "white": "Weiß",
+          "yellow": "Gelb",
+          "green": "Grün",
+          "cyan": "Cyan",
+          "blue": "Blau",
+          "magenta": "Magenta",
+          "red": "Rot",
+          "black": "Schwarz"
+        }
+      },
+      "backgroundColor": {
+        "label": "Hintergrundfarbe",
+        "options": {
+          "black": "Schwarz",
+          "white": "Weiß",
+          "red": "Rot",
+          "green": "Grün",
+          "blue": "Blau",
+          "yellow": "Gelb",
+          "cyan": "Cyan",
+          "magenta": "Magenta",
+          "transparent": "Transparent"
+        }
       }
     }
   },

src/frontend/src/locales/en/settings.json

@@ -126,6 +126,33 @@
           "medium": "Medium",
           "large": "Large"
         }
+      },
+      "fontColor": {
+        "label": "Font color",
+        "options": {
+          "white": "White",
+          "yellow": "Yellow",
+          "green": "Green",
+          "cyan": "Cyan",
+          "blue": "Blue",
+          "magenta": "Magenta",
+          "red": "Red",
+          "black": "Black"
+        }
+      },
+      "backgroundColor": {
+        "label": "Background color",
+        "options": {
+          "black": "Black",
+          "white": "White",
+          "red": "Red",
+          "green": "Green",
+          "blue": "Blue",
+          "yellow": "Yellow",
+          "cyan": "Cyan",
+          "magenta": "Magenta",
+          "transparent": "Transparent"
+        }
       }
     }
   },

src/frontend/src/locales/fr/settings.json

@@ -126,6 +126,33 @@
           "medium": "Moyen",
           "large": "Grand"
         }
+      },
+      "fontColor": {
+        "label": "Couleur du texte",
+        "options": {
+          "white": "Blanc",
+          "yellow": "Jaune",
+          "green": "Vert",
+          "cyan": "Cyan",
+          "blue": "Bleu",
+          "magenta": "Magenta",
+          "red": "Rouge",
+          "black": "Noir"
+        }
+      },
+      "backgroundColor": {
+        "label": "Couleur de fond",
+        "options": {
+          "black": "Noir",
+          "white": "Blanc",
+          "red": "Rouge",
+          "green": "Vert",
+          "blue": "Bleu",
+          "yellow": "Jaune",
+          "cyan": "Cyan",
+          "magenta": "Magenta",
+          "transparent": "Transparent"
+        }
       }
     }
   },

src/frontend/src/locales/nl/settings.json

@@ -126,6 +126,33 @@
           "medium": "Gemiddeld",
           "large": "Groot"
         }
+      },
+      "fontColor": {
+        "label": "Tekstkleur",
+        "options": {
+          "white": "Wit",
+          "yellow": "Geel",
+          "green": "Groen",
+          "cyan": "Cyaan",
+          "blue": "Blauw",
+          "magenta": "Magenta",
+          "red": "Rood",
+          "black": "Zwart"
+        }
+      },
+      "backgroundColor": {
+        "label": "Achtergrondkleur",
+        "options": {
+          "black": "Zwart",
+          "white": "Wit",
+          "red": "Rood",
+          "green": "Groen",
+          "blue": "Blauw",
+          "yellow": "Geel",
+          "cyan": "Cyaan",
+          "magenta": "Magenta",
+          "transparent": "Transparant"
+        }
       }
     }
   },