Feat/GWW-72 convert large values to small value

[zowievangeest]

Ticket: (GWW-72) This pull request fixes that the values are very large, with a unit of m2. The actual value is also very (probably unnecessarily) precise, with 10 decimals.

Main feature

• convert m2 to km2 and reduce to 2 decimals in the end.
• change chart styling based on feedback from earlier on: rounded symbols and drag handles on dataZoom

Screenshot

Deploy preview https://deploy-preview-164--global-water-watch-website.netlify.app/reservoir/92091

[netlify[bot]]

✅ Deploy Preview for global-water-watch-website ready!

Name	Link
🔨 Latest commit	731486a9d3989ade88d135ae0edfdfc612c87f7c
🔍 Latest deploy log	https://app.netlify.com/sites/global-water-watch-website/deploys/63846341354941000993a678
😎 Deploy Preview	https://deploy-preview-164--global-water-watch-website.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site settings.

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

No Coverage information
0.0% Duplication