[FEA] Add uninstall script for the CMake install and container image

[chloecrozier]

Summary + Solution

Add scripts/uninstall.sh so a developer can remove DAQIRI's CMake install or container image without touching the build prerequisites (DPDK, DOCA libraries, CUDA, hugepages, NIC drivers). Targets are cmake, container, and all; the script supports --dry-run, --yes, and a built-in verification step. Short usage notes are added inline to docs/tutorials/bare-metal-cmake-build.md (new Step 7) and docs/getting-started.md with no new tutorial page or mkdocs.yml change

Test plan after solution is implemented

• Dry-run both targets on a host with a working install and confirm the printed actions match build/install_manifest.txt
• Real run to confirm the verification block reports OK for every check