Enhancements to ADIOS conversion tool

[dqwu]

This PR implements some key optimizations for the ADIOS conversion tool in SCORPIO:

[Performance measurement] Added GPTL timers for performance tracking and hotspot identification.

[Decomposition cache size increase] Expanded DECOMP_CACHE_MAX_SIZE from 5 to 64 to reduce overhead in cache management.

[Default rearranger] Changed the default rearranger to REARR_ANY for better adaptability in rearranger selection.

[Optimize hotspot Get() calls] Switched some hotspot Get() calls to Deferred mode to utilize optimized batch reads and used rank 0 for reads to reduce contention.