Small update of Synthetica artist info (Smurfbeatz --> O'Neil Gerald)

[Lilithtreasure]

Affects the following YAMLs with the following additions/changes for each: hsmusic-data/album/synthetica.yaml

• added referenced track Home (Keys of a Piano) to Keys of A Piano track
• changed [[artist:smurfbeatz]] to [[artist:oneil-gerald|Smurfbeatz]] in both album commentary fields
• changed Smurfbeatz credit in Keys of A Piano to be O'Neil Gerald hsmusic-data/artists.yaml
• Smurfbeatz is now O'Neil Gerald, moved Smurfbeatz alias to newly created Aliases field underneath, as well as adding a plathora of aliases (O'Neil Donald, O'Neil Gerald Donald, and TheMerelyHuman) and (live!) URLs (Apple Music, YouTube, linktree, twitter, and TheMerelyHuman newgrounds page) hsmusic-data/album/references-beyond-homestuck.yaml
• added track Home (Keys of a Piano)