refs #3661 Add Icelandic as a translation

spec/config/i18n.spec.ts

@@ -10,6 +10,7 @@ const locales = [
   'ja',
   'ko',
   'pl',
+  'is',
   'it',
   'zh_cn',
   'zh_tw',

src/config/i18n.ts

@@ -8,6 +8,7 @@ import fr from '~/src/config/locales/fr/translation.json'
 import gd from '~/src/config/locales/gd/translation.json'
 import id from '~/src/config/locales/id/translation.json'
 import it from '~/src/config/locales/it/translation.json'
+import is from '~/src/config/locales/is/translation.json'
 import ja from '~/src/config/locales/ja/translation.json'
 import ko from '~/src/config/locales/ko/translation.json'
 import no from '~/src/config/locales/no/translation.json'
@@ -53,6 +54,9 @@ const options: InitOptions = {
     it: {
       translation: it
     },
+    is: {
+      translation: is
+    },
     ja: {
       translation: ja
     },

src/constants/language/index.ts

@@ -25,6 +25,7 @@ export type LanguageList = {
   sv_se: LanguageType
   tzm: LanguageType
   fa: LanguageType
+  is: LanguageType
 }
 
 const languageList: LanguageList = {
@@ -73,6 +74,11 @@ const languageList: LanguageList = {
     key: 'id',
     rfc4646: 'id'
   },
+  is: {
+    name: 'Icelandic',
+    key: 'is',
+    rfc4646: 'is'
+  },
   it: {
     name: 'Italiano',
     key: 'it',

src/renderer/components/Preferences/Language.vue

@@ -54,6 +54,7 @@ export default defineComponent({
       Language.fr,
       Language.gd,
       Language.id,
+      Language.is,
       Language.it,
       Language.ja,
       Language.ko,