Add support for multiple and 2>n dimensional HDF5 Datasets

[luccadibe]

This PR aims to fix and optimize the HDF5Reader implementation from systemds with the goal of being able to correctly read the So2Sat LCZ42 dataset (https://mediatum.ub.tum.de/1454690) .

For this I added support for the filter pipeline and attribute message types from HDF5 ;
n dimensional matrices with n>2 are flattened into 2d .
I also added support for inferring hdf5 from the .h5 file extension.

Apologies for the massive PR 🤕 .
I benchmarked the performance of the new implementation and shared results in this repo:
https://github.com/luccadibe/systemds-hdf5-reader-benchmark

The code still needs some work regarding code style and formatting ( I am not sure if I set up the fomatter correctly as mentioned in the CONTRIBUTING.md ; in some files I was getting a huge diff so I tried to format only what I touched).

I am unsure about how to best split this into multiple PRs , or if that is wanted even.
I would appreciate some general feedback on this.

[codecov]

Codecov Report

❌ Patch coverage is 39.55659% with 518 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.52%. Comparing base (79122eb) to head (c83b072).
⚠️ Report is 27 commits behind head on main.

Files with missing lines	Patch %	Lines
...n/java/org/apache/sysds/runtime/io/ReaderHDF5.java	37.78%	167 Missing and 24 partials ⚠️
...rg/apache/sysds/runtime/io/ReaderHDF5Parallel.java	19.25%	95 Missing and 14 partials ⚠️
...che/sysds/runtime/io/hdf5/H5ContiguousDataset.java	31.49%	69 Missing and 18 partials ⚠️
...ava/org/apache/sysds/runtime/meta/MetaDataAll.java	53.19%	18 Missing and 26 partials ⚠️
...org/apache/sysds/runtime/io/hdf5/H5RootObject.java	53.03%	20 Missing and 11 partials ⚠️
...ntime/io/hdf5/message/H5FilterPipelineMessage.java	0.00%	23 Missing ⚠️
...main/java/org/apache/sysds/runtime/io/hdf5/H5.java	70.37%	10 Missing and 6 partials ⚠️
...ds/runtime/io/hdf5/message/H5AttributeMessage.java	50.00%	2 Missing and 2 partials ⚠️
...ds/runtime/io/hdf5/message/H5DataSpaceMessage.java	42.85%	3 Missing and 1 partial ⚠️
...s/runtime/io/hdf5/message/H5DataLayoutMessage.java	62.50%	2 Missing and 1 partial ⚠️
... and 4 more

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2394      +/-   ##
============================================
- Coverage     72.29%   71.52%   -0.78%     
- Complexity    46937    47446     +509     
============================================
  Files          1513     1539      +26     
  Lines        178421   182620    +4199     
  Branches      35036    35913     +877     
============================================
+ Hits         128993   130611    +1618     
- Misses        39665    42015    +2350     
- Partials       9763     9994     +231     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[mboehm7]

LGTM - thanks for the patch @luccadibe. Overall, this generalization is great. During the merge, I resolve the merge conflicts, reverted the format changes in MetaDataAll, disabled the last test cases (group1/subgroup/data2) which was consistently failing, and replaced the stdout tracing with log tracing.