feat: enable weekday-based medication scheduling

Closes #463

frontend/src/i18n/de.json

@@ -257,8 +257,31 @@
       "applications": "Anwendungen",
       "applications_one": "Anwendung",
       "applications_other": "Anwendungen",
+      "scheduleMode": "Planmodus",
+      "scheduleModeInterval": "Alle X Tage",
+      "scheduleModeWeekdays": "Bestimmte Wochentage",
       "everyDays": "Alle (Tage)",
       "every": "alle",
+      "weekdays": "Wochentage",
+      "weekdaysRequired": "Waehle mindestens einen Wochentag aus",
+      "weekdaysShort": {
+        "mon": "Mo",
+        "tue": "Di",
+        "wed": "Mi",
+        "thu": "Do",
+        "fri": "Fr",
+        "sat": "Sa",
+        "sun": "So"
+      },
+      "weekdaysLong": {
+        "mon": "Montag",
+        "tue": "Dienstag",
+        "wed": "Mittwoch",
+        "thu": "Donnerstag",
+        "fri": "Freitag",
+        "sat": "Samstag",
+        "sun": "Sonntag"
+      },
       "from": "ab",
       "startDate": "Datum",
       "startTime": "Uhrzeit",

frontend/src/i18n/en.json

@@ -257,8 +257,31 @@
       "applications": "applications",
       "applications_one": "application",
       "applications_other": "applications",
+      "scheduleMode": "Schedule mode",
+      "scheduleModeInterval": "Every X days",
+      "scheduleModeWeekdays": "Specific weekdays",
       "everyDays": "Every (days)",
       "every": "every",
+      "weekdays": "Weekdays",
+      "weekdaysRequired": "Select at least one weekday",
+      "weekdaysShort": {
+        "mon": "Mon",
+        "tue": "Tue",
+        "wed": "Wed",
+        "thu": "Thu",
+        "fri": "Fri",
+        "sat": "Sat",
+        "sun": "Sun"
+      },
+      "weekdaysLong": {
+        "mon": "Monday",
+        "tue": "Tuesday",
+        "wed": "Wednesday",
+        "thu": "Thursday",
+        "fri": "Friday",
+        "sat": "Saturday",
+        "sun": "Sunday"
+      },
       "from": "from",
       "startDate": "Date",
       "startTime": "Time",