add lrc plugin (#156)

* added lrc plugin to display lyrics of playing music

* added a small demonstration

* fixed the readme and added proper thumbnail

* added a demo

* trimmed up some deps and removed the demo

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Co-authored-by: shin01221 <mohamed@madin372.com>

lrc/README.md

@@ -0,0 +1,32 @@
+# LRC
+
+![thumbnail](thumbnail.webp)
+
+Displays current song lyrics on the bar widget via `lrc_tty`. Works with MPD and Spotify.
+
+## Plugin
+
+| Field | Value |
+| --- | --- |
+| ID | `shin/lrc` |
+| Entries | Bar widget: `lrc` |
+
+## Requirements
+
+- `lrc_tty` — fetches synchronized lyrics over the network from the configured provider.
+- `playerctl` — reads MPRIS player status and metadata.
+
+## Usage
+
+Enable `shin/lrc` in Settings → Plugins, then add the **LRC** bar widget. It displays the current lyric line when a track is playing.
+
+The widget checks MPD first, then falls back to Spotify.
+
+## Spawned processes
+
+- `playerctl` — enumerates MPRIS players and queries playback status and metadata.
+- `lrc_tty` — fetches synchronized lyrics and outputs them.
+
+## Network access
+
+`lrc_tty` connects to remote lyric APIs to fetch synchronized lyrics for the currently playing track.