SOLR-17636: make Lucene's BPReorderingMergePolicy configurable in Solr

[cpoerschke]

apache/lucene#12622 in Lucene 9.9 added a BPReorderingMergePolicy and the changes in this PR are to make it configurable in Solr.

• https://github.com/apache/lucene/blob/releases/lucene/9.12.1/lucene/misc/src/java/org/apache/lucene/misc/index/BPReorderingMergePolicy.java
• https://github.com/apache/lucene/blob/releases/lucene/9.12.1/lucene/misc/src/java/org/apache/lucene/misc/index/BPIndexReorderer.java

TODO list:

• create JIRA issue if this is interesting, useful, etc. - https://issues.apache.org/jira/browse/SOLR-17636
• add solr/CHANGES.txt entry (new feature?)
• ???

related issues:

• Enable recursive graph bisection out of the box? lucene#12665
• Try applying bipartite graph reordering to KNN graph node ids lucene#13565

[github-actions]

This PR has had no activity for 60 days and is now labeled as stale. Any new activity will remove the stale label. To attract more reviewers, please tag people who might be familiar with the code area and/or notify the [email protected] mailing list. To exempt this PR from being marked as stale, make it a draft PR or add the label "exempt-stale". If left unattended, this PR will be closed after another 60 days of inactivity. Thank you for your contribution!

[github-actions]

This PR is now closed due to 60 days of inactivity after being marked as stale. Re-opening this PR is still possible, in which case it will be marked as active again.