Add storage validation tests and align baseport structure

- Added functional validation test scripts for UFS and eMMC storage, including config checks, basic I/O stress, and dmesg error scans.
- Enhanced robustness with auto block detection and extended diagnostics.
- Moved all existing tests from FunctionalArea/ to Baseport/ to align with standard test folder structure.

Signed-off-by: Srikanth Muppandam <[email protected]>

Author: smuppand