[SYSTEMDS-3891] Add OOC Reshape Primitive

[jessicapriebe]

This adds an OOC reshape primitive that reshapes matrices out-of-core by splitting input blocks into slices and storing them in the cache-owned state table. Output blocks are rebuilt individually or as block rows/columns, depending on the reshape dimensions, and are enqueued as soon as they are completed.

[codecov]

Codecov Report

❌ Patch coverage is 85.87963% with 61 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.78%. Comparing base (4ebbdae) to head (464330e).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...ds/runtime/ooc/primitives/ReshapeOOCPrimitive.java	85.64%	36 Missing and 25 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2619      +/-   ##
============================================
+ Coverage     71.41%   71.78%   +0.36%     
- Complexity    50721    50747      +26     
============================================
  Files          1642     2079     +437     
  Lines        197165   222615   +25450     
  Branches      38306    38343      +37     
============================================
+ Hits         140815   159809   +18994     
- Misses        45279    51693    +6414     
- Partials      11071    11113      +42     

Flag	Coverage Δ
java	71.38% <85.87%> (-0.04%)	⬇️
python	74.96% <ø> (?)

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[Baunsgaard]

Just because i was curious on the OOC operator i took a look. However, it was not super decipherable from the PR for me, so I thought I would leave some hints to clean it up and make it readable.

All just suggestions.

[janniklinde]

Thanks for the patch @jessicapriebe! I reviewed the PR and found some issues related to asynchronous execution and error propagation. I opened a PR to (hopefully) address those issues. Since your PR is fairly complex, I leave those proposed changes for you to review :)

Generally, there is some duplicate code for row/col specific handling. Not sure if this can somehow be simplified but just as a side note. Also, indexing is still hard to understand but I'm honestly not sure how to fix this. Maybe by wrapping those computations into more descriptive functions with a block comment?