Add Related Careers functionality to EventDefinition entity and update related components

Introduced a many-to-many relationship between EventDefinition and Career entities, allowing for the association of multiple careers with an event. Updated the AppDbContext to include a DbSet for Careers and modified the EventDefinitionConfiguration to handle the new relationship. Enhanced the Create, Edit, and Details components to support input and display of related careers, including normalization and processing logic for career names. Updated the database schema to reflect these changes.

Data/Configurations/CareerConfiguration.cs

@@ -0,0 +1,23 @@
+using Core.Entities;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace Data.Configurations
+{
+	public class CareerConfiguration : IEntityTypeConfiguration<Career>
+	{
+		public void Configure(EntityTypeBuilder<Career> builder)
+		{
+			builder.HasKey(c => c.Id);
+
+			// Indexes
+			builder.HasIndex(c => c.Name).IsUnique();
+
+			// Constraints
+			builder.Property(c => c.Name)
+				.IsRequired()
+				.HasMaxLength(200);
+		}
+	}
+}
+

Data/Configurations/EventDefinitionConfiguration.cs

@@ -38,10 +38,18 @@ namespace Data.Configurations
             builder.Property(e => e.Documentation)
                 .HasMaxLength(500);
 
-            // Value conversions for enums
-            builder.Property(e => e.EventFormat)
-                .HasConversion<string>()
-                .HasMaxLength(50);
-        }
-    }
+			// Value conversions for enums
+			builder.Property(e => e.EventFormat)
+				.HasConversion<string>()
+				.HasMaxLength(50);
+
+			// Ignore RelatedCareersText (not mapped to database)
+			builder.Ignore(e => e.RelatedCareersText);
+
+			// Many-to-many relationship with Career
+			builder.HasMany(e => e.RelatedCareers)
+				.WithMany()
+				.UsingEntity(j => j.ToTable("EventDefinitionCareers"));
+		}
+	}
 }