[PM-21079] Add support to integration tests for using sqlserver (#5823)

Adds a SqlServerApiApplicationFactory which allows you to run api tests using SqlServer. Currently a new database is create and destroyed for each test. In the future we'd like a more optimized way to do this.

The database logic is abstracted away in a ITestDatabase interface which handles the configuration, migration and teardown.

test/IntegrationTestCommon/ITestDatabase.cs

@@ -0,0 +1,19 @@
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Bit.IntegrationTestCommon;
+
+#nullable enable
+
+public interface ITestDatabase
+{
+    public void AddDatabase(IServiceCollection serviceCollection);
+
+    public void Migrate(IServiceCollection serviceCollection);
+
+    public void Dispose();
+
+    public void ModifyGlobalSettings(Dictionary<string, string?> config)
+    {
+        // Default implementation does nothing
+    }
+}