feat: added t3-oss validation of environment variables

[vucinatim]

PR description

Added env validation with t3 sso

Notion ticket links:

• https://www.notion.so/zerodaysdev/d4707494a5854258a9efba48c5205018?v=c2d7e1459cce4764a13d2e566717f097&p=d0f9498b4b2a4360b5752ea1cc09280f&pm=s

PR author checklist:

• 🔫 PR is small and easy to review
• 🧪 tests were added/updated where applicable
• 📜 documentation was updated (README.md, Notion etc.)
• 🔭 observability is sensible

Reviewer checklist:

• 🧠 tested manually
• 📱 tested on mobile (if applicable)
• 🌐 tested on different browsers (if applicable)
• 🔭 observability is sensible
• 🤖 automatic tests are sufficient

After merge checklist:

• 📡 client/project manager was notified about update

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Name	Status	Preview	Comments	Updated (UTC)
next-template	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 15, 2023 2:27pm

[github-actions]

Coverage report

Multiple errors occurred

 1 | Error: The process '/usr/local/bin/npx' failed with exit code 1
 2 | Coverage output file not found. (file "report.json" not found)
 3 | Getting code coverage data failed.

St.❔	Category	Percentage	Covered / Total
🔴	Statements	54.55%	78/143
🔴	Branches	40.54%	15/37
🔴	Functions	45.83%	11/24
🔴	Lines	54.55%	72/132

Test suite run success

8 tests passing in 2 suites.

Report generated by 🧪jest coverage report action from 8bef1fd