Add Dendrogram Feature

[anshi05]

Title: Dendrogram Feature - Add Dendrogram Visualization Feature for Hierarchical Clustering

Description:

• Implemented hierarchical clustering using scipy with 'complete' linkage and 'cosine' distance metric.
• Added dendrogram visualization using Matplotlib with improved x-axis labels and enhanced UI for better readability.
• This PR addresses issue Dendrogram Feature #3

Checklist:

☑ I have read and followed the Contributing Guide.
☑ My code follows the project's style guide.
☑ I have added a clear and descriptive commit message.

Dendrogram image:

[HridayM25]

The x-axis ticks should be the names of the files we are using. You can also try using plotly, which makes interactive and more appealing graphs. Here is the reference : https://plotly.com/python/dendrogram/
Also, why this?

sample_embeddings = [np.random.rand(1, 128) for _ in range(10)]
reshaped_embeddings = convert_embeddings(sample_embeddings)
clusters = clustering(reshaped_embeddings)

You need to use the clustering of the files here itself.

[anshi05]

Ok I'll change it