Enhance school creation and staffing management with native language support

- Updated protocol documentation to include `nativeLanguages` in `nameSets` and added `nativeLanguage` to school creation options.
- Enhanced the UI for school creation to allow selection of native languages, improving user experience.
- Revised API interfaces to accommodate new native language features, ensuring proper data handling.
- Improved localization strings to support new native language functionalities in both English and Russian.
- Updated tests to validate the new native language features and ensure robust functionality in staffing scenarios.

tests/HSchool.Content.Tests/PeopleDefTests.cs

@@ -19,7 +19,17 @@ public class PeopleDefTests
         Assert.All(catalog.Needs.Values, need => Assert.True(need.DecayPerHour > 0));
         Assert.True(catalog.Needs["Sleep"].RestoredOffCampus);
         Assert.Equal(0.1f, catalog.Needs["Hunger"].DecayPerHour);
-        Assert.Contains(catalog.Skills["Agility"].BodyLimits, limit => limit.Attribute == "Build" && limit.Value == "Obese");
+        Assert.True(catalog.Skills["Communication"].Always);
+        Assert.True(catalog.Skills["Agility"].Always);
+        Assert.True(catalog.Skills["Pedagogy"].Work);
+        Assert.Equal(0.4f, catalog.Skills["English"].AdultChance);
+        Assert.Equal(
+            ["RussianLanguage", "BelarusianLanguage", "UkrainianLanguage"],
+            catalog.NameSets["Slavic"].Spoken);
+        Assert.Equal(0.6f, catalog.NameSets["Slavic"].RelatedLanguageChance);
+        Assert.Equal(40, catalog.NameSets["Slavic"].RelatedLanguageMax);
+        Assert.Contains(catalog.Subjects["ForeignLanguage"].Skills, share => share.Skill == "English");
+        Assert.False(catalog.Skills.ContainsKey("ForeignLanguage"));
         Assert.True(catalog.NameSets.ContainsKey("Slavic"));
         Assert.True(catalog.NameSets["Slavic"].MaleGiven.Count >= 20);
         Assert.Equal("Славянский", catalog.Label("ru", catalog.NameSets["Slavic"]));
@@ -27,7 +37,7 @@ public class PeopleDefTests
         Assert.Equal("Усидчивый", catalog.Label("ru", catalog.Traits["Diligent"]));
         Assert.True(catalog.Subjects.ContainsKey("PrimarySchool"));
         Assert.NotNull(catalog.StaffingRules);
-        Assert.Equal(12, catalog.StaffingRules.PoolSize);
+        Assert.Equal(32, catalog.StaffingRules.PoolSize);
         Assert.Equal(20, catalog.StaffingRules.BaseWeeklyHours);
         Assert.Equal(4, catalog.StaffingRules.WeeksPerMonth);
         Assert.Equal(36, catalog.StaffingRules.MaxWeeklyHours);