Fix fuzzy filtering

[Sv443]

• Exact matches of song / artist or the entire query should be preferred over all other results.
• When the query includes parentheses (ft. xy), (xy Remix), they should be considered while doing the exact matching.
• Score distribution is unreliable and too "loose"

Examples:

• https://api.sv443.net/geniurl/search?artist=Skrillex&song=Summit
• https://api.sv443.net/geniurl/search?artist=Petit%20Biscuit&song=Problems
• https://api.sv443.net/geniurl/search?artist=Upsahl&song=Drugs