Feature - Add support for a fiscal year period defined in user settings.

* Add "This fiscal year", "Last fiscal year" as date range options in Transaction Details to filter transactions to those periods
* Add fiscal year ranges to Statistics & Trend Analysis
* Add "fiscal year start date" to user profile settings, allowing the user to select any date of the calendar year as the start of the fiscal year
* Add "fiscal year format" to user profile settings, allowing the user to specify how financial year date labels should appear

Implementation notes:
* The default fiscal year start is January 1 and the default fiscal year display format is "FY 2025"
* Fiscal year start date (month number & day number) are stored together in db as a uint16, high byte & low byte respectively
* February 29 is disallowed as a fiscal year start date, since it is never used as a convention in any country
* Jest is added to the project as a dev dependency, for unit tests in frontend

Signed-off-by: Sebastian Reategui <seb.reategui@gmail.com>

src/views/base/statistics/StatisticsTransactionPageBase.ts

@@ -37,6 +37,7 @@ export function useStatisticsTransactionPageBase() {
     const showAccountBalance = computed<boolean>(() => settingsStore.appSettings.showAccountBalance);
     const defaultCurrency = computed<string>(() => userStore.currentUserDefaultCurrency);
     const firstDayOfWeek = computed<number>(() => userStore.currentUserFirstDayOfWeek);
+    const fiscalYearStart = computed<number>(() => userStore.currentUserFiscalYearStart);
 
     const allDateRanges = computed<LocalizedDateRange[]>(() => {
         if (analysisType.value === StatisticsAnalysisType.CategoricalAnalysis) {
@@ -224,6 +225,7 @@ export function useStatisticsTransactionPageBase() {
         showAccountBalance,
         defaultCurrency,
         firstDayOfWeek,
+        fiscalYearStart,
         allDateRanges,
         allSortingTypes,
         allDateAggregationTypes,

src/views/base/transactions/TransactionListPageBase.ts

@@ -102,6 +102,7 @@ export function useTransactionListPageBase() {
 
     const currentTimezoneOffsetMinutes = computed<number>(() => getTimezoneOffsetMinutes(settingsStore.appSettings.timeZone));
     const firstDayOfWeek = computed<number>(() => userStore.currentUserFirstDayOfWeek);
+    const fiscalYearStart = computed<number>(() => userStore.currentUserFiscalYearStart);
     const defaultCurrency = computed<string>(() => getUnifiedSelectedAccountsCurrencyOrDefaultCurrency(allAccountsMap.value, queryAllFilterAccountIds.value, userStore.currentUserDefaultCurrency));
     const showTotalAmountInTransactionListPage = computed<boolean>(() => settingsStore.appSettings.showTotalAmountInTransactionListPage);
     const showTagInTransactionListPage = computed<boolean>(() => settingsStore.appSettings.showTagInTransactionListPage);
@@ -365,6 +366,7 @@ export function useTransactionListPageBase() {
         // computed states
         currentTimezoneOffsetMinutes,
         firstDayOfWeek,
+        fiscalYearStart,
         defaultCurrency,
         showTotalAmountInTransactionListPage,
         showTagInTransactionListPage,

src/views/base/users/UserProfilePageBase.ts

@@ -26,6 +26,7 @@ export function useUserProfilePageBase() {
         getAllShortDateFormats,
         getAllLongTimeFormats,
         getAllShortTimeFormats,
+        getAllFiscalYearFormats,
         getAllDecimalSeparators,
         getAllDigitGroupingSymbols,
         getAllDigitGroupingTypes,
@@ -60,6 +61,7 @@ export function useUserProfilePageBase() {
     const allShortDateFormats = computed<TypeAndDisplayName[]>(() => getAllShortDateFormats());
     const allLongTimeFormats = computed<TypeAndDisplayName[]>(() => getAllLongTimeFormats());
     const allShortTimeFormats = computed<TypeAndDisplayName[]>(() => getAllShortTimeFormats());
+    const allFiscalYearFormats = computed<TypeAndDisplayName[]>(() => getAllFiscalYearFormats());
     const allDecimalSeparators = computed<TypeAndDisplayName[]>(() => getAllDecimalSeparators());
     const allDigitGroupingSymbols = computed<TypeAndDisplayName[]>(() => getAllDigitGroupingSymbols());
     const allDigitGroupingTypes = computed<LocalizedDigitGroupingType[]>(() => getAllDigitGroupingTypes());
@@ -99,11 +101,13 @@ export function useUserProfilePageBase() {
             newProfile.value.transactionEditScope === oldProfile.value.transactionEditScope &&
             newProfile.value.language === oldProfile.value.language &&
             newProfile.value.defaultCurrency === oldProfile.value.defaultCurrency &&
+            newProfile.value.fiscalYearStart === oldProfile.value.fiscalYearStart &&
             newProfile.value.firstDayOfWeek === oldProfile.value.firstDayOfWeek &&
             newProfile.value.longDateFormat === oldProfile.value.longDateFormat &&
             newProfile.value.shortDateFormat === oldProfile.value.shortDateFormat &&
             newProfile.value.longTimeFormat === oldProfile.value.longTimeFormat &&
             newProfile.value.shortTimeFormat === oldProfile.value.shortTimeFormat &&
+            newProfile.value.fiscalYearFormat === oldProfile.value.fiscalYearFormat &&
             newProfile.value.decimalSeparator === oldProfile.value.decimalSeparator &&
             newProfile.value.digitGroupingSymbol === oldProfile.value.digitGroupingSymbol &&
             newProfile.value.digitGrouping === oldProfile.value.digitGrouping &&
@@ -194,6 +198,7 @@ export function useUserProfilePageBase() {
         allShortDateFormats,
         allLongTimeFormats,
         allShortTimeFormats,
+        allFiscalYearFormats,
         allDecimalSeparators,
         allDigitGroupingSymbols,
         allDigitGroupingTypes,