LU-10026 csdc: reserve layout bits for compress component

LU-10026 csdc: reserve layout bits for compress component

Add layout bits for compress component layout.

* lcme_compr_type: compression type (gzip, lz4, lz4hc, lzo, etc.)
* lcme_compr_lvl: compression level (0=default, 1-15)
* lcme_compr_chunk_log_bits: chunk size = 2^(16+chunk_log_bits)

Component pattern:
* LOV_PATTERN_COMPRESS - file contains compressed data chunks and
       cannot be read by a client without decompression support.

Compress component flags:
* LCME_FL_COMPRESS - the component should be compressed with the
       compression algorithm stored in lcme_comp_type, at level
       lcme_comp_level, with chunk size 2^(16+lcme_chunk_log_bits)
* LCME_FL_PARTIAL - the component holds some uncompressed chunks due
       to poor write size/alignment, and may benefit from being
       recompressed as the full file data is available
* LCME_FL_NOCOMPR - the component should not be compressed because
       the data was found to be incompressible, or by user request

Lustre-change: https://review.whamcloud.com/49170
Lustre-commit: TBD (from 147d4eb27b85b4994a47539be6aceff212365ee5)

Signed-off-by: Bobi Jam <bobijam@whamcloud.com>
Change-Id: Idca22cca87b01bba8a5b3c85ca62044abe1d30eb
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/49321
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>