[PriceInsights][iOS] Add Jackpot UI to price insights

This CL adds the following:
- The jackpot component of Price Insights.

Screenshot
Jackpot UI https://screenshot.googleplex.com/BGsBopjm4abKhie.png

Bug: b/326448553
Change-Id: I0d343efa7250b99adc5108a6dc116471cf51d343
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5371897


Commit-Queue: Ayman Almadhoun <ayman@chromium.org>
Auto-Submit: Cheick Cisse <cheickcisse@google.com>
Reviewed-by: Ayman Almadhoun <ayman@chromium.org>
Reviewed-by: Gayane Petrosyan <gayane@google.com>
Cr-Commit-Position: refs/heads/main@{#1280543}