Update README.md with project details, features, requirements, architecture, and data management for PLib video library manager.

src/PLib.Infrastructure/Persistence/LibraryDbContext.cs

@@ -0,0 +1,15 @@
+using Microsoft.EntityFrameworkCore;
+using PLib.Domain.Videos;
+
+namespace PLib.Infrastructure.Persistence;
+
+public sealed class LibraryDbContext(DbContextOptions<LibraryDbContext> options) : DbContext(options)
+{
+    public DbSet<VideoItem> Videos => Set<VideoItem>();
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        modelBuilder.ApplyConfigurationsFromAssembly(typeof(LibraryDbContext).Assembly);
+        base.OnModelCreating(modelBuilder);
+    }
+}