feat(i18n): add Finnish translation for selection

frontend/src/i18n/index.ts

@@ -37,6 +37,7 @@ export const SUPPORTED_LOCALES = {
 	'bg-BG': 'Български',
 	'ko-KR': '한국어',
 	'tr-TR': 'Türkçe',
+	'fi-FI': 'Suomi',
 	// IMPORTANT: Also add new languages to useDayjsLanguageSync
 	// IMPORTANT: Also add new languages to pkg/i18n/i18n.go
 } as const

frontend/src/i18n/useDayjsLanguageSync.ts

@@ -29,6 +29,7 @@ export const DAYJS_LOCALE_MAPPING = {
 	'bg-bg': 'bg',
 	'ko-kr': 'ko',
 	'tr-tr': 'tr',
+	'fi-fi': 'fi',
 } as Record<SupportedLocale, ISOLanguage>
 
 export const DAYJS_LANGUAGE_IMPORTS = {
@@ -57,6 +58,7 @@ export const DAYJS_LANGUAGE_IMPORTS = {
 	'bg-bg': () => import('dayjs/locale/bg'),
 	'ko-kr': () => import('dayjs/locale/ko'),
 	'tr-tr': () => import('dayjs/locale/tr'),
+	'fi-fi': () => import('dayjs/locale/fi'),
 } as Record<SupportedLocale, () => Promise<ILocale>>
 
 export async function loadDayJsLocale(language: SupportedLocale) {

pkg/i18n/i18n.go

@@ -73,6 +73,7 @@ var availableLanguages = map[string]bool{
 	"bg-BG":    true,
 	"ko-KR":    true,
 	"tr-TR":    true,
+	"fi-FI":    true,
 	// IMPORTANT: Also add new languages to the frontend
 }