tests(calendar): Add calendar render tests (#3)

- updates calendar to support overriding the current day when rendering
- supports current culture when rendering
- renames Calendar to CalendarGenerator

tests/ModuleTests/Calendar/TestData/CalendarTestDates.cs

@@ -0,0 +1,14 @@
+namespace ModuleTests.Calendar.TestData;
+
+public class CalendarTestDates : TestDataEnumerator<DateTime>
+{
+	public CalendarTestDates()
+	{
+		Data =
+		[
+			new DateTime(2026, 06, 01),
+			new DateTime(2026, 07, 01),
+			new DateTime(2026, 08, 01),
+		];
+	}
+}

tests/ModuleTests/Calendar/TestData/CultureCodeTestData.cs

@@ -0,0 +1,19 @@
+namespace ModuleTests.Calendar.TestData;
+
+public class CultureCodeTestData : TestDataEnumerator<string>
+{
+	public CultureCodeTestData()
+	{
+		Data =
+		[
+			"da-DK",
+			"en-AU",
+			"cs-CZ",
+			"es-PR",
+			"fr-LU",
+			"nl-NL",
+			// Will render unaligned due to the character encoding, here to catch if I fix this later
+			"te-IN"
+		];
+	}
+}