COVID: Refresh Button for Summary Data

[venisha-kalola]

Add a refresh button to refetch the summary on demand.

Acceptance Criteria:

• Button near heading.
• Disabled/loading state during fetch.
• Prevent overlapping requests.
• Error surfaced via ErrorMessage.

File: src/pages/Covid.jsx

[meetdhorajiya]

Hi @venisha-kalola , I would like to work on this issue .Can you Please assign it to me?

[meetdhorajiya]

Hi @Hrishikesh-Dalal , please review my PR #54 .

[meetdhorajiya]

As the issue is solved , Request to close this issue.