[integrations] Fix: split client and server code

[marthendalnunes]

After adding the t3-env package to TurboETH, the following pages broke due to import of private env variables from Etherscan and Disco into client components:

• Rainbowkit
• Etherscan
• Disco
• Transactions Dashboard

This PR splits the affected functions into client and server imported files, fixing the breaking issue.

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Name	Status	Preview	Updated (UTC)
light-turbo-eth	✅ Ready (Inspect)	Visit Preview	Jun 7, 2023 0:25am
turbo-eth	✅ Ready (Inspect)	Visit Preview	Jun 7, 2023 0:25am