Add initial implementation of API, database, and user management components.

MikrocopDb/AppDbContext.cs

@@ -0,0 +1,32 @@
+using Microsoft.EntityFrameworkCore;
+using MikrocopDb.Entities;
+
+namespace MikrocopDb;
+
+public sealed class AppDbContext : DbContext
+{
+    public AppDbContext(DbContextOptions<AppDbContext> options) : base(options)
+    {
+    }
+
+    public DbSet<UserEntity> Users => Set<UserEntity>();
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        modelBuilder.Entity<UserEntity>(entity =>
+        {
+            entity.HasKey(x => x.Id);
+            entity.Property(x => x.UserName).HasMaxLength(100).IsRequired();
+            entity.Property(x => x.FullName).HasMaxLength(200).IsRequired();
+            entity.Property(x => x.Email).HasMaxLength(200).IsRequired();
+            entity.Property(x => x.MobileNumber).HasMaxLength(30).IsRequired();
+            entity.Property(x => x.Language).HasMaxLength(20).IsRequired();
+            entity.Property(x => x.Culture).HasMaxLength(20).IsRequired();
+            entity.Property(x => x.PasswordHash).IsRequired();
+            entity.Property(x => x.PasswordSalt).HasMaxLength(128).IsRequired();
+
+            entity.HasIndex(x => x.UserName).IsUnique();
+            entity.HasIndex(x => x.Email).IsUnique();
+        });
+    }
+}