Upgrade to Daffodil 4.1.0 / ACE 12+13, add SimpleEDI schema and setup script

[matthiasblomme]

Summary

• Daffodil 4.1.0 API migration (IBM_DFDL.scala): updated imports from lib.api → lib.iapi, replaced removed ValidationMode enum with withValidation(String), updated getProcessor signature (removed useSerializedProcessor), fixed getDiagnostics return type to java.util.List, updated Diagnostic constructor call, fixed EmbeddedSchemaSource.copy to pass all args, and adopted Scala 3 vararg syntax.
• Java 17 requirement: Daffodil 4.1.0 requires Java 17 (class file version 61). README and UPGRADE-NOTES document the -java-home flag for sbt, pointing at the Java 17 bundled with ACE.
• ACE 12/13 support: README jar list updated from ACE 11 names to ACE 12/13 names (protobuf-java-3.25.5.jar, ibm-dfdl-eclipse-dependencies.jar, icu4j-charset.jar, new EMF jar names). scd.jar is no longer shipped.
• setup-ace-jars.ps1: new PowerShell setup script that copies all required DFDL runtime jars and IBM sample files from an ACE installation into the project. Accepts -AceVersion 12|13 (defaults to 12) or -AcePath <custom path> for non-standard install locations.
• SimpleEDI example schema: new SimpleEDI.dfdl.xsd (EDI-inspired, + field separator, ' segment terminator), test data files (SimpleEDI-happy.txt, SimpleEDI-error.txt), TDML test suite (SimpleEDITests.tdml with parse, round-trip, and error cases), and Scala test runner (TestSimpleEDI.scala). All three tests pass against both IBM DFDL (ACE 12) and Daffodil.
• UPGRADE-NOTES.md: new document covering all 9 Daffodil API changes with before/after code snippets, the ACE 11 → ACE 12/13 jar name mapping table, and descriptions of all new files.
• README.md: rewritten for accuracy — fixed typos, updated requirements (Daffodil 4.1.0 + Java 17), corrected jar list, added Java Setup and quick-setup sections, updated resource tree to include SimpleEDI files.

Test plan

• Run .\setup-ace-jars.ps1 -AceVersion 12 — verify 11 jars copied to lib/
• Run .\setup-ace-jars.ps1 -AceVersion 13 — verify same result from ACE 13 install
• Run .\setup-ace-jars.ps1 -AcePath "<custom path>" — verify custom path is accepted
• sbt -java-home "C:\Program Files\IBM\ACE\12.0.12.17\common\java17" compile — clean build
• sbt -java-home "C:\Program Files\IBM\ACE\12.0.12.17\common\java17" test — all 11 tests pass (TestIBMDFDLSamples ×2, TestCrossTestRig ×6, TestSimpleEDI ×3)

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