Added type safe env vars

[taylor-lindores-reeves]

1. Installed @t3-oss/env-nextjs to provide app with type safety for environment variables.
2. Set up environment variable access in env.mjs in root directory
3. Updated environment variables by importing env in various pages and using in place of process.env access

[vercel]

@taylor-lindores-reeves is attempting to deploy a commit to the Zaid Mukaddam's Team Team on Vercel.

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