feat: Add ModelsLab provider for PyGPT

[adhikjoshi]

ModelsLab Integration for PyGPT

Comprehensive multi-modal AI provider integration adding ModelsLab's powerful APIs to PyGPT desktop AI assistant.

🌟 Features

🤖 Uncensored Chat (LLM)

• OpenAI-compatible uncensored chat completion
• Creative freedom without content restrictions
• Supports streaming and function calling
• Models: Llama 3.1 8B/70B Uncensored

🎨 Image Generation

• High-quality image generation with multiple models
• Models: Flux, SDXL, Playground v2.5, Juggernaut XL
• Features: Style presets, negative prompts, CFG scale control
• Resolutions: Up to 1792x1024 pixels
• Auto-download and local storage

🎬 Video Generation (NEW!)

• First comprehensive video plugin for PyGPT
• Text-to-video and image-to-video generation
• Models: CogVideoX, AnimateDiff
• Features: Custom duration, FPS, resolution control
• Formats: MP4 output with up to 60 seconds duration

🗣️ Text-to-Speech (TTS)

• High-quality speech synthesis with emotion control
• Voices: Default, Professional, Narrative, Conversational
• Emotions: Neutral, Happy, Sad, Angry, Excited, Calm, Whisper, Dramatic
• Languages: 12 languages including EN, ES, FR, DE, ZH, JA
• Features: Speed control, voice cloning support

📦 Package Contents

Core Components

• client.py (20KB) - ModelsLab API client with async support
• modelslab.py (16KB) - LLM provider for PyGPT
• models_json_additions.json (5KB) - Model definitions for PyGPT

Plugin Enhancements

• Image Generation Provider (13KB) - Extends existing image plugin
• Video Generation Plugin (18KB) - NEW comprehensive video plugin
• TTS Provider (15KB) - Enhances audio output plugin

Integration Features

• Multi-Modal API Client: Handles all ModelsLab endpoints
• Async Processing: Intelligent polling for long-running operations
• Error Handling: Robust error management and retry logic
• Configuration: Seamless integration with PyGPT settings