feat: Implement ExistingDatabaseContext for managing existing databases with customizable naming strategies and auto-discovery of entities

feat: Add SqlServerSchemaProvider for extracting database schema information from SQL Server

feat: Introduce DatabaseType and NamingStrategy enums for better database management and naming conventions

feat: Create IDatabaseDiscovery and IDatabaseManager interfaces for database operations and metadata retrieval

feat: Develop REST service client architecture with BaseRestServiceClient and SAP Business One specific implementation

feat: Implement REST service discovery page with UI for connecting to SAP Business One Service Layer and displaying discovered entities

DataConnection/DB/EF/DatabaseSchemaProviderFactory.cs

@@ -0,0 +1,33 @@
+using System;
+using DataConnection.EF.SchemaProviders;
+using DataConnection.Enums;
+using DataConnection.Interfaces;
+
+namespace DataConnection.EF;
+
+/// <summary>
+/// Factory per la creazione di provider di schema del database
+/// </summary>
+public class DatabaseSchemaProviderFactory
+{
+    /// <summary>
+    /// Crea un provider di schema in base al tipo di database
+    /// </summary>
+    /// <param name="databaseType">Tipo di database</param>
+    /// <returns>Provider di schema appropriato</returns>
+    public static IDatabaseSchemaProvider CreateProvider(DatabaseType databaseType)
+    {
+        return databaseType switch
+        {
+            DatabaseType.SqlServer => new SqlServerSchemaProvider(),
+            // Aggiungere qui altri provider quando implementati
+            // DatabaseType.MySql => new MySqlSchemaProvider(),
+            // DatabaseType.PostgreSql => new PostgreSqlSchemaProvider(),
+            // DatabaseType.Oracle => new OracleSchemaProvider(),
+            // DatabaseType.Sqlite => new SqliteSchemaProvider(),
+            // DatabaseType.DB2 => new DB2SchemaProvider(),
+            // DatabaseType.SapHana => new SapHanaSchemaProvider(),
+            _ => throw new NotSupportedException($"Tipo di database non supportato per l'estrazione dello schema: {databaseType}")
+        };
+    }
+}