Add health check endpoint and tests

[Devashish08]

Issue Description

healthcheck endpoint for discord service. its going to be a get request

Expected Behavior

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Current Behavior

none

Screenshots

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Reproducibility

• [ ] This issue is reproducible
• [x] This issue is not reproducible

Steps to Reproduce

Severity/Priority

• [ ] Critical
• [ ] High
• [ ] Medium
• [x] Low

Additional Information

Checklist

• [x] I have read and followed the project's code of conduct.
• [x] I have searched for similar issues before creating this one.
• [x] I have provided all the necessary information to understand and reproduce the issue.
• [x] I am willing to contribute to the resolution of this issue.

[joyguptaa]

Add test coverage as well

[Devashish08]

Add test coverage as well

i had already write tests for it