Svm recipe classifier

[shagunroperia]

Adding Recipe Classifier example using LIBSVM

This PR adds a new example demonstrating the use of LIBSVM for text classification using SVM:

• Implements a RecipeClassifier to categorize recipes as Italian or Mexican cuisine
• Showcases preprocessing of text data into feature vectors
• Demonstrates training and prediction using LIBSVM's SVM implementation
• Includes a test suite to validate the classifier's functionality
• Adds documentation on usage and implementation details

This example serves as a practical demonstration of applying SVM to text classification tasks using LIBSVM. It can help users understand how to preprocess text data, train an SVM model, and make predictions on new data.