Renames namespace to sql2migration

Updates the namespace in composer.json to correctly reflect the project's naming convention, ensuring proper autoloading and usage of the library.

Author: bertugfahriozer

composer.json

@@ -24,7 +24,7 @@
     },
     "autoload": {
         "psr-4": {
-            "ext-ci4mssql2migration\\": "src/"
+            "sql2migration\\": "src/"
         }
     },
     "extra": {