Feature: Add Swiss backoffice localizations (#2503)

* Add swiss languages as backoffice languages

* Added Swiss localizations to manifest

* De-duplicated localizations

To reduce lines of duplicated code, (from the German, French
and Italian localizations), those localizations are imported at runtime.

---------

Co-authored-by: leekelleher <leekelleher@gmail.com>

src/Umbraco.Web.UI.Client/src/assets/lang/de-ch.ts

@@ -0,0 +1,17 @@
+/**
+ * Creator Name: The Umbraco community
+ * Creator Link: https://docs.umbraco.com/umbraco-cms/extending/language-files
+ *
+ * Language Alias: de_CH
+ * Language Int Name: German Switzerland (DE-CH)
+ * Language Local Name: Deutsch Schweiz (DE-CH)
+ * Language LCID: 7
+ * Language Culture: de-CH
+ */
+import de_de from './de-de.js';
+import type { UmbLocalizationDictionary } from '@umbraco-cms/backoffice/localization-api';
+
+export default {
+	// NOTE: Imports and re-exports the German (Germany) localizations, so that any German (Switzerland) localizations can be override them. [LK]
+	...de_de,
+} as UmbLocalizationDictionary;

src/Umbraco.Web.UI.Client/src/assets/lang/fr-ch.ts

@@ -0,0 +1,17 @@
+/**
+ * Creator Name: The Umbraco community
+ * Creator Link: https://docs.umbraco.com/umbraco-cms/extending/language-files
+ *
+ * Language Alias: fr_ch
+ * Language Int Name: French Switzerland (FR-CH)
+ * Language Local Name: Français Suisse (FR-CH)
+ * Language LCID: 12
+ * Language Culture: fr-CH
+ */
+import fr_fr from './fr-fr.js';
+import type { UmbLocalizationDictionary } from '@umbraco-cms/backoffice/localization-api';
+
+export default {
+	// NOTE: Imports and re-exports the French (France) localizations, so that any French (Switzerland) localizations can be override them. [LK]
+	...fr_fr,
+} as UmbLocalizationDictionary;

src/Umbraco.Web.UI.Client/src/assets/lang/it-ch.ts

@@ -0,0 +1,17 @@
+/**
+ * Creator Name: The Umbraco community
+ * Creator Link: https://docs.umbraco.com/umbraco-cms/extending/language-files
+ *
+ * Language Alias: it_ch
+ * Language Int Name: Italian Switzerland (IT-CH)
+ * Language Local Name: Italiano Svizerra (IT-CH)
+ * Language LCID: 16
+ * Language Culture: it-CH
+ */
+import it_it from './it-it.js';
+import type { UmbLocalizationDictionary } from '@umbraco-cms/backoffice/localization-api';
+
+export default {
+	// NOTE: Imports and re-exports the Italian (Italy) localizations, so that any Italian (Switzerland) localizations can be override them. [LK]
+	...it_it,
+} as UmbLocalizationDictionary;

src/Umbraco.Web.UI.Client/src/packages/core/localization/manifests.ts

@@ -61,6 +61,16 @@ export const manifests: Array<ManifestLocalization> = [
 		},
 		js: () => import('../../../assets/lang/de-de.js'),
 	},
+	{
+		type: 'localization',
+		alias: 'Umb.Localization.De-CH',
+		weight: -100,
+		name: 'Deutsch (Schweiz)',
+		meta: {
+			culture: 'de-ch',
+		},
+		js: () => import('../../../assets/lang/de-ch.js'),
+	},
 	{
 		type: 'localization',
 		alias: 'Umb.Localization.En-GB',
@@ -101,6 +111,16 @@ export const manifests: Array<ManifestLocalization> = [
 		},
 		js: () => import('../../../assets/lang/fr-fr.js'),
 	},
+	{
+		type: 'localization',
+		alias: 'Umb.Localization.Fr-CH',
+		weight: -100,
+		name: 'Français (Suisse)',
+		meta: {
+			culture: 'fr-ch',
+		},
+		js: () => import('../../../assets/lang/fr-ch.js'),
+	},
 	{
 		type: 'localization',
 		alias: 'Umb.Localization.He-IL',
@@ -131,6 +151,16 @@ export const manifests: Array<ManifestLocalization> = [
 		},
 		js: () => import('../../../assets/lang/it-it.js'),
 	},
+	{
+		type: 'localization',
+		alias: 'Umb.Localization.It-CH',
+		weight: -100,
+		name: 'Italiano (Svizerra)',
+		meta: {
+			culture: 'it-ch',
+		},
+		js: () => import('../../../assets/lang/it-ch.js'),
+	},
 	{
 		type: 'localization',
 		alias: 'Umb.Localization.Ja-JP',