Refactor envelope generator service dependencies

This commit replaces the `AddEnvelopeGeneratorRepositories` method with `AddEnvelopeGeneratorInfrastructureServices`, allowing for more flexible configuration through `IConfiguration` and `Action<SQLExecutorParams>`. The `SQLExecutor` class now utilizes `SQLExecutorParams` for its connection string, enhancing configurability. A new `SQLExecutorParams` class has been introduced to encapsulate connection string management. Various service registration calls have been updated to integrate the new infrastructure services, improving modularity and ease of database connection management.

EnvelopeGenerator.GeneratorAPI/Program.cs

@@ -159,7 +159,7 @@ builder.Services.AddCookieBasedLocalizer() ;
 
 // Envelope generator serives
 builder.Services
-    .AddEnvelopeGeneratorRepositories()
+    .AddEnvelopeGeneratorInfrastructureServices(sqlExecutorConfigureOptions: executor => executor.ConnectionString = connStr)
     .AddEnvelopeGeneratorServices(config);
 
 var app = builder.Build();