feat: Goa GEL Blockchain e-Licensing Platform - Full Stack Implementation

Complete implementation of the Goa Government e-Licensing platform with:

Backend:
- NestJS API with JWT authentication
- PostgreSQL database with Knex ORM
- Redis caching and session management
- MinIO document storage
- Hyperledger Besu blockchain integration
- Multi-department workflow system
- Comprehensive API tests (266/282 passing)

Frontend:
- Angular 21 with standalone components
- Angular Material + TailwindCSS UI
- Visual workflow builder
- Document upload with progress tracking
- Blockchain explorer integration
- Role-based dashboards (Admin, Department, Citizen)
- E2E tests with Playwright (37 tests)

Infrastructure:
- Docker Compose orchestration
- Blockscout blockchain explorer
- Development and production configurations

backend/src/modules/workflows/dto/create-workflow.dto.ts

@@ -0,0 +1,42 @@
+import {
+  IsString,
+  IsOptional,
+  IsArray,
+  ValidateNested,
+} from 'class-validator';
+import { Type } from 'class-transformer';
+import { WorkflowStageDto } from './workflow-stage.dto';
+
+export class CreateWorkflowDto {
+  @IsString()
+  workflowType: string;
+
+  @IsString()
+  name: string;
+
+  @IsOptional()
+  @IsString()
+  description?: string;
+
+  @IsArray()
+  @ValidateNested({ each: true })
+  @Type(() => WorkflowStageDto)
+  stages: WorkflowStageDto[];
+
+  @IsOptional()
+  @IsArray()
+  @IsString({ each: true })
+  onSuccessActions?: string[];
+
+  @IsOptional()
+  @IsArray()
+  @IsString({ each: true })
+  onFailureActions?: string[];
+
+  @IsOptional()
+  metadata?: Record<string, any>;
+
+  @IsOptional()
+  @IsString()
+  createdBy?: string;
+}