Squash-merge PR #312 and backfill translations to match main

- Add German (de) translation catalog (PR #312, by @edenhaus)
- Backfill cs/nl with the washer/dishwasher/dryer course codes PR #275
  added to en.json (85, 0c, 0d, 26, 2a, 35) so every shipped language
  still mirrors the English catalog key-for-key
- Backfill German with every catalog key added to main since PR #312
  was opened: the PR #251/#275 course-code additions, plus AC/fan
  preset states, kimchi zone mode, edge/indicator lighting, energy
  saving mode, the learned-modes options flow, and newer exception
  messages

Co-authored-by: edenhaus <26537646+edenhaus@users.noreply.github.com>

custom_components/localthings/translations/cs.json

@@ -303,7 +303,10 @@
           "a7": "Intenzivní",
           "a8": "Expresní",
           "8c": "Extra tichý",
-          "88": "Samočištění"
+          "88": "Samočištění",
+          "85": "Jemné",
+          "0c": "Express",
+          "0d": "Samočištění"
         }
       },
       "dispense_type": {
@@ -345,7 +348,9 @@
           "4c": "Osvěžení vzduchem",
           "51": "Eko bavlna",
           "53": "AI sušení+",
-          "4e": "Automatické sušení"
+          "4e": "Automatické sušení",
+          "26": "Provětrání",
+          "2a": "Hygienické sušení+"
         }
       },
       "favorite_capacity": {
@@ -652,7 +657,8 @@
           "87": "Stažený program",
           "88": "Péče o domácí mazlíčky",
           "8f": "Intenzivní studená",
-          "96": "Méně mikrovláken"
+          "96": "Méně mikrovláken",
+          "35": "Eko bavlna"
         }
       },
       "washer_dry_level": {

custom_components/localthings/translations/nl.json

@@ -303,7 +303,10 @@
           "a7": "Intensief",
           "a8": "Express",
           "8c": "Extra stil",
-          "88": "Zelfreiniging"
+          "88": "Zelfreiniging",
+          "85": "Delicaat",
+          "0c": "Express",
+          "0d": "Zelfreiniging"
         }
       },
       "dispense_type": {
@@ -345,7 +348,9 @@
           "4c": "Opfrissen",
           "51": "Eco katoen",
           "53": "AI drogen+",
-          "4e": "Zelf drogen"
+          "4e": "Zelf drogen",
+          "26": "Luchtverfrissing",
+          "2a": "Hygiënische verzorging+"
         }
       },
       "favorite_capacity": {
@@ -652,7 +657,8 @@
           "87": "Gedownload",
           "88": "Pet Care",
           "8f": "Intensief koud",
-          "96": "Minder microvezels"
+          "96": "Minder microvezels",
+          "35": "Eco katoen"
         }
       },
       "washer_dry_level": {