feat: integrate Swagger for API documentation

src/ASTRAIN.Api/Program.cs

@@ -5,6 +5,7 @@ using Microsoft.EntityFrameworkCore;
 var builder = WebApplication.CreateBuilder(args);
 
 builder.Services.AddOpenApi();
+builder.Services.AddSwaggerGen();
 builder.Services.AddCors(options =>
 {
     options.AddDefaultPolicy(policy =>
@@ -30,6 +31,12 @@ var app = builder.Build();
 if (app.Environment.IsDevelopment())
 {
     app.MapOpenApi();
+    app.UseSwagger();
+    app.UseSwaggerUI(options =>
+    {
+        options.SwaggerEndpoint("/openapi/v1.json", "ASTRAIN API");
+        options.RoutePrefix = "docs";
+    });
 }
 
 // app.UseHttpsRedirection();