Dynamic canvas with plugin based node system and mvp backend integration

[sarkerjr]

Description

This PR implements the dynamic canvas with a plugin-based node system and MVP backend integration as described in #6.

This includes:

• A plugin-based system for defining and registering custom nodes
• A dynamic canvas renderer that loads and displays nodes from plugins
• Initial node components and plugin definitions
• Drag-and-drop node creation and basic movement
• MVP backend integration for saving and loading canvas state

Related Issue

• Fixes Dynamic Canvas with Plugin-Based Node System and MVP Backend Integration #6

Type of Change

• New feature (non-breaking change which adds functionality)
• Code refactoring (no functional changes)

Checklist

• I have read the CONTRIBUTING.md document
• My code follows the code style of this project
• I have added tests that prove my fix is effective or that my feature works
• I have updated the documentation accordingly
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings