feature(#6): this commit introduces global usage reference to the “common.constants” namespace

Author: https-richardy

Tests/Usings.cs

@@ -17,6 +17,7 @@
 global using HttpsRichardy.Federation.Domain.Aggregates;
 global using HttpsRichardy.Federation.Domain.Filtering;
 global using HttpsRichardy.Federation.Domain.Collections;
+global using HttpsRichardy.Federation.Common.Constants;
 
 global using HttpsRichardy.Federation.Application.Services;
 global using HttpsRichardy.Federation.Application.Providers;