chore(): Reorganize modules (#7210)

**What**
Move all modules to the modules directory

packages/modules/auth/src/index.ts

@@ -0,0 +1,11 @@
+import {
+  moduleDefinition,
+  revertMigration,
+  runMigrations,
+} from "./module-definition"
+
+export default moduleDefinition
+export { revertMigration, runMigrations }
+
+export * from "./initialize"
+export * from "./loaders"