Add Dynamic Music Visualization Reacting to Audio Beats/Mood 🎵

**Issue Title:** Implement Dynamic Real-Time Music Visualization

**Description:**

Enhance HarmonyCode by adding a **real-time music visualizer** that reacts to the beats and mood of the currently playing track, making the interface more immersive and visually aligned with the music.

**Feature Details:**

* **Animated Visuals:** Include animated waveform, particle effects, and pulse bars synced with audio frequency/amplitude.
* **Mood Adaptation:** Visuals must adapt to the tempo and mood of the music (e.g., chill LoFi = soft waves, energetic = fast pulsating particles).
* **Integration:** The visualizer should be integrated into the main player or available as a separate fullscreen visualizer mode.
* **Settings:** Add Optional Visualizer Settings to allow users to toggle visualization type, color, or intensity.

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### Related Pull Request

This feature is currently being explored in an existing Pull Request:

* **PR Title:** **Add dynamic music visualization reacting to audio beats/mood**
* **PR Link:** (Please insert the full link to Pull Request **#87** here)
* **Author:** @JwelSrivastava
* **Note:** This Issue serves as the formal specification for the feature being addressed in the linked PR.