Align ODE dependencies: add Commons Math 3.x alongside 2.x (#92)

[dyrpsf]

This PR implements the first part of issue #92 by ensuring both Commons Math 2.x and 3.x
are available on the classpath:

• Added org.apache.commons:commons-math3:3.6.1 alongside the existing
  org.apache.commons:commons-math:2.2 in pom.xml.
• Verified that the project builds with mvn -DskipTests compile and mvn test.
• mvn dependency:tree "-Dincludes=org.apache.commons:commons-math,org.apache.commons:commons-math3"
  now lists both:
  • org.apache.commons:commons-math:jar:2.2:compile
  • org.apache.commons:commons-math3:jar:3.6.1:compile
• (Optional, if you ran it) org.simulator.optsolvx.OptSolvXDemo runs without errors.

[xts-Michi]

I am currently testing and debugging the full implementation of OptSolvX as a new backend for SBSCL (see PR #90 for current status).

Consequently, this PR should remain on hold until the OptSolvX implementation is complete. This ensures the new version of Commons Math can be tested and safely integrated into the new environment. Updating versions now would interfere with current progress and create unnecessary overhead.

[dyrpsf]

I am currently testing and debugging the full implementation of OptSolvX as a new backend for SBSCL (see PR #90 for current status).

Consequently, this PR should remain on hold until the OptSolvX implementation is complete. This ensures the new version of Commons Math can be tested and safely integrated into the new environment. Updating versions now would interfere with current progress and create unnecessary overhead.

@xts-Michi ,Thanks a lot for the explanation and the pointer to PR #90!

I’m happy to keep this PR on hold until the OptSolvX backend is finished and the new setup for
Commons Math can be tested properly. That makes sense to avoid extra overhead and possible
conflicts with your current work.

Once the OptSolvX implementation is merged and you’re ready to revisit this, please let me know
and I’ll be glad to rebase this branch and adjust anything that’s needed so the Commons Math 3
update integrates cleanly.