refactor: improve code readability by formatting type declarations

In this commit, we've made minor changes to various PHP files in the project in order to improve
code readability. We've standardized the formatting for type declarations (bool, float, int,
string, array) to be separated by a whitespace character on either side of the `|` symbol where
more than one type is possible. No functionality has changed in this commit - this is purely for
ease of reading and maintaining the code base.

src/QUI/ERP/Currency/AbstractCurrency.php

@@ -46,7 +46,7 @@ abstract class AbstractCurrency implements CurrencyInterface
     /**
      * @var float|bool
      */
-    protected bool|float $exchangeRate = false;
+    protected bool | float $exchangeRate = false;
 
     /**
      * @var int
@@ -182,7 +182,7 @@ public function toArray(): array
      * @param null|QUI\Locale $Locale -optional
      * @return float
      */
-    public function amount($amount, null |QUI\Locale $Locale = null): float
+    public function amount($amount, null | QUI\Locale $Locale = null): float
     {
         if (is_float($amount) || is_int($amount)) {
             return $amount;
@@ -215,7 +215,7 @@ public function amount($amount, null |QUI\Locale $Locale = null): float
      * @param null|QUI\Locale $Locale - optional, locale object
      * @return string
      */
-    public function format($amount, null|QUI\Locale $Locale = null): string
+    public function format($amount, null | QUI\Locale $Locale = null): string
     {
         if (!$Locale) {
             $Locale = $this->Locale;
@@ -279,7 +279,7 @@ public function autoupdate(): bool
      *
      * @throws Exception
      */
-    public function convert($amount, $Currency): float|int|string
+    public function convert($amount, $Currency): float | int | string
     {
         if (!is_numeric($amount)) {
             QUI\System\Log::addError('Only numeric are allowed Currency->convert()', [
@@ -347,7 +347,7 @@ public function convertFormat($amount, $Currency): string
      * @param boolean|string|Currency $Currency - optional, default = false -> return own exchange rate
      * @return float|boolean
      */
-    public function getExchangeRate($Currency = false): float|bool
+    public function getExchangeRate($Currency = false): float | bool
     {
         if ($Currency === false) {
             return $this->exchangeRate;

src/QUI/ERP/Currency/Calc.php

@@ -26,9 +26,9 @@ class Calc
      * @throws QUI\Exception
      */
     public static function convert(
-        float|int|string $amount,
-        Currency|array|string $currencyFrom,
-        Currency|array|string $currencyTo = 'EUR'
+        float | int | string $amount,
+        Currency | array | string $currencyFrom,
+        Currency | array | string $currencyTo = 'EUR'
     ): float {
         $From = Handler::getCurrency($currencyFrom);
         $To = Handler::getCurrency($currencyTo);
@@ -47,9 +47,9 @@ public static function convert(
      * @throws QUI\Exception
      */
     public static function convertWithSign(
-        float|int|string $amount,
-        Currency|array|string $currencyFrom,
-        Currency|array|string $currencyTo = 'EUR'
+        float | int | string $amount,
+        Currency | array | string $currencyFrom,
+        Currency | array | string $currencyTo = 'EUR'
     ): string {
         $From = Handler::getCurrency($currencyFrom);
         $To = Handler::getCurrency($currencyTo);
@@ -67,9 +67,9 @@ public static function convertWithSign(
      * @throws QUI\Exception
      */
     public static function getExchangeRateBetween(
-        Currency|array|string $currencyFrom,
-        Currency|array|string $currencyTo
-    ): float|bool {
+        Currency | array | string $currencyFrom,
+        Currency | array | string $currencyTo
+    ): float | bool {
         $From = Handler::getCurrency($currencyFrom);
         $To = Handler::getCurrency($currencyTo);
 

src/QUI/ERP/Currency/Conf.php

@@ -52,7 +52,7 @@ public static function getAccountingCurrency(): ?Currency
      *
      * @return array|bool|string
      */
-    public static function conf(string $section, ?string $key): bool|array|string
+    public static function conf(string $section, ?string $key): bool | array | string
     {
         try {
             $Package = QUI::getPackage('quiqqer/currency');

src/QUI/ERP/Currency/Currency.php

@@ -23,7 +23,7 @@ class Currency extends AbstractCurrency
      * @param QUI\Locale|null $Locale
      * @return string
      */
-    public static function getCurrencyTypeTitle(?QUI\Locale $Locale = null): string
+    public static function getCurrencyTypeTitle(null | QUI\Locale $Locale = null): string
     {
         if (empty($Locale)) {
             $Locale = QUI::getLocale();