feat: add artist page

[qvalentin]

Possible TODOs:

• [ ] The metadata only contains like the fist 9 albums of the artist, maybe you could add a "load all" button that uses the api
• [x] add the link to the artist page on the lyrics page
• [ ] add the year of the album on the artist page
• [x] css might not be the best ¯\ (ツ)/¯
• [x] display artists on search page

[rramiachraf]

Great job. ^^