feat: Added ability to load spending plans from environment variable. #6000

All 3 tests pass in 32s

1 files - 17 4 suites - 262 32s ⏱️ - 31m 57s
3 tests - 601 3 ✅ - 595 0 💤 - 4 0 ❌ - 2
3 runs - 693 3 ✅ - 685 0 💤 - 4 0 ❌ - 4

Results for commit 174b5a5. ± Comparison against earlier commit 07e99d5.