[mCBM 2024] Improve chain reco script w/ step check + bug fixes + fix L1 macro

- Store logs of each step in temp file + check if success pattern found
- Stop early if a step fails
- Fix some warnings for printf usage from ShellCheck online checker
- Fix some variables names (typos?) found by ShellCheck
- Avoid overwriting reco output with symbolic link
- In L1 macro, avoir error if output folder already existing (mkdir option)
- In L1 macro, set verbosity one level up to LOW to see severity