Support multi-target "jeweils" commands and range renumbering

Add a Sammelbefehl command that applies one operation to several
"und"/"sowie"/comma-coordinated Stellen sharing a common prefix, and
resolve "Die bisherigen Absätze X bis Y werden zu den Absätzen X' bis Y'"
into descending single renumberings. Parsing gains
StellenParser.parseMehrfach; the applier folds sub-commands into one log
entry.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Change-Id: Iaa2c7161066d40d0605c00d3b6ca9a08696070e7
8 files changed
tree: af77a6cf2fb584de346e6a9387aa10fca9b14767
  1. .mvn/
  2. src/
  3. .gitignore
  4. COPYING
  5. mvnw
  6. mvnw.cmd
  7. pom.xml
  8. README.adoc