New hfile reader should support "stream" mode

The HFile reader in HBase has two primary modes: # *Pread mode* - This is the first mode that starts with "p"
# *Streaming mode* - This is the second mode that prefixes with "stream"

 
{*}Pread mode{*}: (point look up, already supported) * Uses random access reads (positioned reads)
* Good for seeking to specific positions in the file
* Optimized for random access patterns
* Typically used for point lookups or when reading non-contiguous parts of a file
* More efficient when you need to jump around in the file

{*}Streaming mode{*}: * Uses sequential reads
* Optimized for reading large contiguous sections of data
* More efficient when reading entire blocks or scanning through data sequentially
* Better performance for scan operations or when reading a file from beginning to end
* Reduces the number of I/O operations

 
The streaming mode we should add similar support in hudi hfile reader.

## JIRA info

- Link: https://issues.apache.org/jira/browse/HUDI-9353
- Type: Improvement

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## Comments

05/May/25 16:59;daviszhang;next step:
# Need to showcase when batch look up on 1 index file group will happen
# in that case, when we use the old hfile reader streaming mode it out performs the point look up mode;;;

Start by locating Hudi's HFile reader and comparing its existing point-lookup (pread) path with the HBase reader's streaming mode. Use the batch lookup on one index file group described in the comment to measure the behavior; done means streaming mode is supported and its performance benefit is demonstrated for that case.

Written by the indexing model from the issue text.