explorer: Add cardano db v2 support & rework tabs layout #8160

All 1 590 tests pass in 10m 38s

4 files ± 0 56 suites +4 10m 38s ⏱️ -5s
1 590 tests + 8 1 590 ✅ + 8 0 💤 ±0 0 ❌ ±0
1 888 runs +32 1 888 ✅ +32 0 💤 ±0 0 ❌ ±0

Results for commit 8bdabaf. ± Comparison against earlier commit 366d6ef.