Extract hardcoded values to configuration file

[KaykCaputo]

Description

Several URLs, constants, and configuration values are hardcoded throughout the codebase. These should be extracted to a configuration file for better maintainability.

Current Hardcoded Values

• Line 144: CHUNK_SIZE = 50
• Line 184: Search API URL https://solr.sscdn.co/cc/h2/
• Line 236: Cifra Club URL pattern https://www.cifraclub.com.br/
• Line 260: Chord color 44AAFF
• Line 272: Font size dp(9)

Proposed Solution

Create a config.py file:

# config.py
class Config:
    # API Settings
    SEARCH_API_URL = "https://solr.sscdn.co/cc/h2/"
    CIFRA_CLUB_BASE_URL = "https://www.cifraclub.com.br/"
    REQUEST_TIMEOUT = 5
    SEARCH_LIMIT = 8
    
    # UI Settings
    CHUNK_SIZE = 50
    CHORD_COLOR = "44AAFF"
    LYRICS_FONT_SIZE = 9
    
    # User Agent
    USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"

Benefits

• Easier configuration management
• Single source of truth
• Simpler testing with mock configurations
• Better for future features like theme customization