chore: adds PostgreSQL

src/api/Program.cs

@@ -1,7 +1,13 @@
+using Api.Data;
+using Microsoft.EntityFrameworkCore;
+
 var builder = WebApplication.CreateBuilder(args);
 
 // Add services to the container.
 // Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
+builder.Services.AddDbContext<AppDbContext>(options =>
+    options.UseNpgsql(builder.Configuration.GetConnectionString("PostgresConnection")));
+
 builder.Services.AddOpenApi();
 
 var app = builder.Build();
@@ -10,7 +16,7 @@ var app = builder.Build();
 if (app.Environment.IsDevelopment())
 {
     app.MapOpenApi().CacheOutput();
-    
+
     app.UseSwaggerUI(options =>
     {
         options.SwaggerEndpoint("/openapi/v1.json", "v1");