Add comprehensive search & tag-based filter system with tooltips and range filtersAdd comprehensive search & tag-based filter system

[letentvish]

🎯 Feature Overview

This PR adds a comprehensive search and filtering system for Stremio with multi-tag support, interactive tooltips, and advanced filtering capabilities to enhance content discovery.

✨ Key Features

• Multi-tag search: Filter by genres, moods, cinematography styles, countries, and awards
• Interactive tooltips: Hover explanations for tags (e.g., "slow burn", "neo-noir", "existential")
• Range filters: Year (1900-2024) and rating (0.0-10.0) dual-handle sliders
• Real-time filtering: Instant results with advanced AND/OR search logic
• Responsive UI: Smooth animations and modern dark theme design

📁 Files Added (11 files, 1,716 lines)

• SearchFilter.qml - Main filter panel with all controls
• TagCategory.qml - Tag grouping component
• TagButton.qml - Individual tags with explanatory tooltips
• RangeFilter.qml - Dual-handle range sliders
• FilteredContentView.qml - Complete filter + content view
• ContentCard.qml - Content display cards with visual badges
• searchFilterEngine.js - Core filtering algorithms and logic
• SearchFilterDemo.qml - Working demo application
• SearchFilterIntegration.qml - Integration example for existing UI
• SEARCH_FILTER_README.md - Complete documentation
• PULL_REQUEST_TEMPLATE.md - PR template

🔧 Integration Options

• QML Overlay: Add as sliding panel over existing UI
• WebChannel Support: Communicates with web UI via JavaScript
• Modular Design: Easy to customize and extend

🧪 Testing

qmake SearchFilterDemo.qml && make && ./SearchFilterDemo