Add auto detect of locales files and contrib guide

src/lib/translations.ts

@@ -1,25 +1,32 @@
 import i18n from 'sveltekit-i18n';
 import lang from './lang.json';
+import * as fs from 'fs';
+
+// Get all translations files
+const loaders = [];
+const translations = {};
+fs.readdir('src/lib/locales/', (err, files) => {
+	files.forEach((file) => {
+		if (file.endsWith('.json')) {
+			const lang_iso = file.replace('.json', '');
+
+			loaders.push({
+				locale: file.replace('.json', ''),
+				key: '',
+				/* @vite-ignore */
+				loader: async () => (await import(`./locales/${lang_iso}.json`)).default
+			});
+
+			translations[lang_iso] = { lang };
+		}
+	});
+});
 
 /** @type {import('sveltekit-i18n').Config} */
 const config = {
 	fallbackLocale: 'en',
-	translations: {
-		en: { lang },
-		fr: { lang }
-	},
-	loaders: [
-		{
-			locale: 'en',
-			key: '',
-			loader: async () => (await import('./locales/en.json')).default
-		},
-		{
-			locale: 'fr',
-			key: '',
-			loader: async () => (await import('./locales/fr.json')).default
-		}
-	]
+	translations: translations,
+	loaders: loaders
 };
 
 export const { t, loading, locales, locale, loadTranslations } = new i18n(config);