Enable Side-by-Side Product Comparison

Description:
Currently, SkinSenseAI allows users to analyze individual skincare products. However, there is no feature to compare multiple products directly. Adding a side-by-side comparison view would allow users to make smarter, data-driven skincare choices.

Proposed Solution:

Add a new Comparison Screen in the frontend.

Allow users to select 3–4 products from history or scan new ones.

Display key metrics in a table/chart format:

Suitability Score

Personalised Score and Recommendations

Allergen presence

Beneficial vs. concerning ingredients

Price (if available)

Highlight differences in colors for easy readability.