Server-side base backups (lz4 and zstd) with pg_basebackup (backup_method = postgres)

[didiermichel]

Now that barman can leverage compress base backups with pg_basebackup, it is time to add lz4 and zstd support. Those compression algorithm will be available for PG >= 15

Details for lz4: Allow --compress server-lz4:level=LEVEL with 1<= LEVEL <=12

Details for zstd: Allow --compress server-zstd:level=LEVEL,workers=WORKERS with 0 <= LEVEL <= 22 and WORKERS >= 0