added copy-button

[omesh-omg]

Description
added copy button
This PR fixes #337

Building.Nighthawk._.Nighthawk.-.Google.Chrome.2023-11-19.10-45-38.mp4

I have added the button using javascript dom manipulation by searching all the code blocks and
adding the button to them in the code and than there is a CSS file for button, and also imported clipboard.min.js for copy function.

Signed commits

• Yes, I signed my commits.

[welcome]

Yay, your first pull request! 👍 A contributor will be by to give feedback soon. In the meantime, please review the Layer5 Community Welcome Guide and sure to join the community Slack.
Be sure to double-check that you have signed your commits. Here are instructions for making signing an implicit activity while peforming a commit.

[netlify]

✅ Website preview ready!

Name	Link
🔨 Latest commit	e1e4b5a
🔍 Latest deploy log	https://app.netlify.com/sites/getnighthawk/deploys/655a4951f2efa400081c22f9
😎 Deploy Preview	https://deploy-preview-346--getnighthawk.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 configuration.

[Savio629]

@omesh-omg
You need to change the 'Copy' text to Copy icon
Also remove the vertical scrollbar arised from your code

[Savio629]

Please revert back with unnecessary changes.

[omesh-omg]

Please revert back with unnecessary changes.

@Savio629 okay

[Savio629]

@omesh-omg Replace the font-family with the one that is already in use.

[omesh-omg]

okay see for all that you can suggest,
anything you else you find that needs attention.

[omesh-omg]

@omesh-omg You need to change the 'Copy' text to Copy icon Also remove the vertical scrollbar arised from your code

is there any specific icon for the copy button ? it can't see that in the Figma file of nighthawk,
In meshery website there is a copy icon but it is in different theme , so we can't use it here