Add Smart Contract Template Library & Workflow Manager

[OSAMOR19]

New Feature: Smart Contract Template Library

 This PR adds a comprehensive Smart Contract Template Library with:
 
Features
 - Contract Templates**: Pre-built templates for Tokens, Security, Governance, NFT, DeFi
 - Workflow Management**: Visual workflow builder with drag-and-drop interface
 - Template Categories**: Organized by difficulty (Beginner, Intermediate, Advanced)
 - Import/Export**: Share templates and workflows with other developers
 - Local Storage**: Persistent storage for custom templates and workflows
 - Usage Analytics**: Track template popularity and usage statistics
 
  Technical Implementation
 - Vue 3 Composition API with TypeScript
 - Modular architecture with reusable components
 - Comprehensive error handling and validation
 - Modern UI/UX with Bulma CSS framework
 
  Files Added
 - `src/components/TemplateLibraryWorkspace.vue` - Main UI component
 - `src/components/WorkflowBuilder.vue` - Workflow builder component
 - `src/providers/useTemplateLibrary.ts` - State management provider
 - `TEMPLATE_LIBRARY_README.md` - Comprehensive documentation
 
 🎯 Benefits
 - Reduces development time for smart contract creation
 - Provides educational resources for blockchain developers
 - Enhances the overall developer experience on Everscale
 - Creates a foundation for community-driven template ecosystem
 
 This feature positions Everscale Web Tools as a more comprehensive and developer-friendly platform! 🌟