Add NLP synthetic data generation notebook

[catalystshakya]

Summary
This Script generates a labelled synthetic dataset of social-media-style posts about bushfire events in Victoria.

Each post is augmented with realistic social-media metadata (timestamp, likes, retweets, platform, hashtags, location).

Planner task :Synthetic Post Data generation script for narrative clustering
Link :

Type

• script

Changes: - Week 9

• Post IDs shortened
• Non-fire-related posts added
• JSON output script added

Reasons :

[vuhoangnamdoan]

Hi Samadhi, since we've discussed in a quick meeting with the team. Your work looks quite clean for synthetic data generation. Consider using LLM APIs for generate more random data later, but for now it looks good in general.

[catalystshakya]

@vuhoangnamdoan Changes discussed such as shortening of post ids and adding non fire related posts were added.