Add EloWard League of Legends Rank Badges Module

[SunnyWang0]

Adds a new module that displays League of Legends rank badges next to usernames in Twitch chat ONLY when watching League streams.

Features

• Automatically detects League of Legends streams
• Fetches and displays rank badges (Iron through Challenger) from EloWard API
• Shows rank details (tier, division, LP) on hover
• Click badge to open player's OP.GG profile
• LRU cache with 1-hour TTL for performance
• Detects and defers to official EloWard Chrome extension when present
• User setting to enable/disable (on by default)

Implementation

• New /modules/eloward/ module with composables for game detection and rank fetching
• Integrated into existing chat UserTag component
• Zero performance impact when not on League streams
• Production-ready with proper error handling and cache management

Configuration

Users can toggle the feature via Settings → Appearance → Vanity → "EloWard Rank Badges"