Task omnichain: add confirmation prompt before overwriting files

[lumtis]

When following the tutorial:
https://www.zetachain.com/docs/developers/omnichain/tutorials/withdraw/#set-up-your-environment
The command

npx hardhat omnichain Withdraw recipient

will erase the file content to be written if they already exist.

It might eventually be a concern since there are many sections of the tutorial that write into deploy.ts and the command erase deploy.ts content.

My suggestion would be to add a verification for the command to ask for confirmation.

npx hardhat omnichain Withdraw recipient
deploy.ts already exist, do you want to continue and overwrite the file?