feat: added a dynamic smart contract(Price Feed)

[aviral727]

Description

Created a smart contract which uses an oracle(chainlink price feed) for getting real time price of eth/usd

Fixes #9

Dependencies

chainlink contracts v0.8

Future Improvements

Further the contract can be made more intuitive and optimizations can be done

Mentions

NA

Screenshots of relevant screens

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• I have performed a self-check on my work

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• My changes in code generate no new warnings
• [] My changes are breaking another fix/feature of the project
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[github-actions]

PR is not linked to any issue, please make the corresponding changes in the body.

[bartick]

Not quiet sure how is this dynamic. Would have preferred if you are sending the price from the connected app.
Please explain your solution. Also please remove your hardcoded contract address and add a comment there

@advaita-saha please look into it

[aviral727]

@bartick I thought I just had to get data from an oracle for a dynamic contract. I may have misunderstood, any suggestions how I can rectify it?