Switching some restate-core types to the new module style #7392

All 44 tests pass, 1 skipped in 1m 51s

5 files - 2 5 suites - 2 1m 51s ⏱️ - 2m 34s
45 tests - 2 44 ✅ - 2 1 💤 ±0 0 ❌ ±0
113 runs - 69 111 ✅ - 68 2 💤 - 1 0 ❌ ±0

Results for commit 2ac41ac. ± Comparison against earlier commit 67bf47a.