Added hardhat-deploy support and updated few packages.

[Params10]

• Installed hardhat-deploy plugin.
• Added Deployment script which deploys contracts using hardhat deploy.
• Updated Readme.md with new commands to test.
• Added deployments for existing contracts on gnosis,goerli,mainnet.
• Updated hardhat.config.js for multiple network support as well as verification support from etherscan.
• Updated packages for Bn and testing.
• Updated test scripts that supports hardhat-deploy and uses hardhat deployments from the stored version.

[sonarcloud]

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[greenlucid]

Hey, looks good
Reminding you you should use the commit style as indicated by conventional commits so that they're compatible with yarn release, even though it's not actually used in this repo. It makes changes easier to follow as well