Configurable rate rounding (#5734)

* added invoice hydration of the issuer object
* added "rate calculator" mode
* new config to select rounding mode
* replace static calls with dependency injection

tests/Timesheet/UtilTest.php

@@ -12,11 +12,14 @@ namespace App\Tests\Timesheet;
 use App\Timesheet\Util;
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\Group;
 use PHPUnit\Framework\TestCase;
 
+#[Group('legacy')]
 #[CoversClass(Util::class)]
 class UtilTest extends TestCase
 {
+    #[Group('legacy')]
     #[DataProvider('getRateCalculationData')]
     public function testCalculateRate(float $hourlyRate, int $duration, float $expectedRate): void
     {
@@ -42,6 +45,7 @@ class UtilTest extends TestCase
         yield [7360.99, 1234, 2502.74];
     }
 
+    #[Group('legacy')]
     public function testCalculateRateWithRounding(): void
     {
         $total = 0.00;
@@ -82,6 +86,7 @@ class UtilTest extends TestCase
         self::assertEqualsWithDelta(149176.3, $total, 0.00001);
     }
 
+    #[Group('legacy')]
     public function testDecimalDuration(): void
     {
         $inputs = [