FEAT : Adding new feature like new price and old price

[SrijaVuppala295]

As shown here, want to add old price and new price with discount .

Features

Calculate New Price: Compute the discounted price from the original price using either a percentage discount or a fixed amount discount.
Display Prices: Show the old price (strikethrough) and the new price (prominent) to highlight the discount.

[SrijaVuppala295]

Please assign this issue to me and add labels