feat: add cpm package manager to amp-devcontainer-cpp #1100

All 27 tests pass in 57s

2 files ±0 2 suites ±0 57s ⏱️ +4s
27 tests +1 27 ✅ +1 0 💤 ±0 0 ❌ ±0
29 runs +1 29 ✅ +1 0 💤 ±0 0 ❌ ±0

Results for commit 6634aa3. ± Comparison against earlier commit 9d1f52b.