Add Support for Custom Stopwords in Text Analysis

[imDarshanGK]

Current behavior: The text analysis module does not currently support the addition of custom stopwords.

Expected behavior: It would be helpful if users could add their own stopwords to be excluded during text analysis, improving the flexibility and accuracy of results.

Steps to reproduce:

Attempt to add a list of custom stopwords to the text analysis module.

Observe that there is no current functionality to support this.

Thank you