Restored happidev plugin

[jodacame]

Hello,

I’m pleased to announce that happi.dev is back online, and I am the owner of the platform. A few years ago, I had to pause the project due to personal reasons, which unfortunately affected the availability of the happidev_lyrics plugin. I deeply apologize for any inconvenience this may have caused.

Recently, I’ve resumed the development of happi.dev with the goal of maintaining it long-term. As part of this effort, I have restored the Lyrics API and ensured compatibility with the plugin. This PR reinstates the happidev_lyrics plugin, so users can once again retrieve song lyrics via happi.dev.

Thank you for your patience, and I hope this update improves the experience for users who rely on this plugin. Please let me know if you encounter any issues or have any feedback.