Adds config.json, useConfig hook and move dashboard_url from env to config

[rithviknishad]

Proposed Changes

• Part 1 of Create config.json for Whitelabelling #4192

⚠️ Breaking Changes

• dashboard_url is now set from config.json instead of env. This change will work in staging, however for production, REACT_APP_CONFIG env needs to be configured.

Notes

Set the URL to the config.json file in environment (defaults to: "/config.json")

REACT_APP_CONFIG="/config.json"

An example config.json is specified in /public/config.json:

{
    "dashboard_url": "https://dashboard.coronasafe.network/"
}

Whenever adding/removing configs, do update the IConfig interface in /src/Common/hooks/useConfig.ts.

Use the configurations inside the app as shown:

const foo = () => {
  const { dashboard_url } = useConfig();
}

The config.json is cached in local storage (key: "config").

@coronasafe/care-fe-code-reviewers @coronasafe/code-reviewers

Merge Checklist

• Add specs that demonstrate bug / test a new feature.
• Update product documentation.
• Ensure that UI text is kept in I18n files.
• Prep screenshot or demo video for changelog entry, and attach it to issue.
• Request for Peer Reviews
• Completion of QA

[netlify]

✅ Deploy Preview for care-egov-staging ready!

Name	Link
🔨 Latest commit	05e459c
🔍 Latest deploy log	https://app.netlify.com/sites/care-egov-staging/deploys/63aaa356e6fcdf0008ef9a40
😎 Deploy Preview	https://deploy-preview-4223--care-egov-staging.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.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Updated
care-storybook	✅ Ready (Inspect)	Visit Preview	Dec 27, 2022 at 7:51AM (UTC)

[khavinshankar]

@mathew-alex @rithviknishad LGTM

[github-actions]

👋 Hi, @rithviknishad,
Conflicts have been detected against the base branch. Please rebase your branch against the base branch.

---

This message is automatically generated by prince-chrismc/label-merge-conflicts-action so don't hesitate to report issues/improvements there.

[github-actions]

👋 Hi, @rithviknishad,
Conflicts have been detected against the base branch. Please rebase your branch against the base branch.

---

This message is automatically generated by prince-chrismc/label-merge-conflicts-action so don't hesitate to report issues/improvements there.

[github-actions]

👋 Hi, @rithviknishad,
Conflicts have been detected against the base branch. Please rebase your branch against the base branch.

---

This message is automatically generated by prince-chrismc/label-merge-conflicts-action so don't hesitate to report issues/improvements there.

[sonarcloud]

SonarCloud Quality Gate failed.   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

No Coverage information
4.0% Duplication