Refactor VM and Plugin Management

- Removed the `plugins.constants.ts` file as it was no longer needed.
- Updated the `vm.class.ts` to improve result handling and logging.
- Introduced `vm.constants.ts` to manage registered plugins and modules.
- Simplified the test payload in `case1-payload.js` by removing unnecessary insert logic.
- Enhanced `case1.ts` to include database and migration setup, improving test clarity.
- Deleted unused functions for adding modules and plugins, streamlining the codebase.

src/databaseManager/migration/migration.module.ts

@@ -1,8 +1,8 @@
-import { DatabaseManagerModule } from "src/databaseManager/database/database.manager.module";
 import { forwardRef, Module } from "@nestjs/common";
 import { MigrationService } from "./migration.service";
 import { TypeOrmModule } from "@nestjs/typeorm";
 import { Migration } from "../entities/migration.entity";
+import { DatabaseManagerModule } from "../database.manager.module";
 
 @Module({
   imports: [