Add RecAction configuration support

Introduced a new `RecAction` configuration section in `appsettings.json` with a `MaxConcurrentInvocations` property. Updated `Program.cs` to use the `Configuration` object to pass the `RecAction` settings to the `AddRecServices` method. Replaced the `MediatRLicense` value in `appsettings.json` with no functional changes.

src/ReC.API/Program.cs

@@ -4,10 +4,13 @@ using ReC.Application;
 
 var builder = WebApplication.CreateBuilder(args);
 
+var config = builder.Configuration;
+
 // Add services to the container.
 builder.Services.AddRecServices(options =>
 {
     options.LuckyPennySoftwareLicenseKey = builder.Configuration["LuckyPennySoftwareLicenseKey"];
+    options.ConfigureRecActions(config.GetSection("RecAction"));
 });
 
 builder.Services.AddRecInfrastructure(options =>