Inflection-208 Add multisource and DMLex dictionary parsing support

[nciric]

Fixes #208

Summary

Adds support for parsing OASIS DMLex v1.0 JSON dictionaries alongside (or instead of) Wikidata lexeme dumps in tools/dictionary-parser, with configurable multi-source conflict resolution.

Key Changes

• Explicit Multi-Source CLI Flags (ParserOptions):
  • --wikidata <file1> [<file2> ...] and --dmlex <file1> [<file2> ...] (supporting multiple space- or comma-separated files as well as --wikidata=<files> / --dmlex=<files>, including .bz2 compressed inputs).
  • --merge-conflicts[={true|false}] (default false): controls whether same-part-of-speech entries across multiple input files are overridden by later files (false) or merged (true).
  • Replaced static in-place mutation of Grammar.TYPEMAP with per-instance overrides (customTypeMap and ignoredGrammemes) on ParserOptions.
• OASIS DMLex v1.0 Deserialization & Streaming (DMLexEntry, DMLexInflectedForm, DMLexStringListDeserializer, ParseWikidata):
  • Streaming Jackson parser (parseDMLexStream) validating the top-level DMLex JSON object (langCode and entries) and converting entries into the shared Lemma / Inflection pipeline.
  • Supports both flat string tags and nested DMLex tag/label/pronunciation objects, synthesizing a default form from headword when inflectedForms is omitted.
  • Extended Grammar lookup (getMappedGrammemes) to normalize camelCase, snake_case, and hyphenated DMLex/Universal Dependencies grammatical tags in addition to Wikidata Q-IDs.
• Two-Tier Cross-Source Conflict Resolution (ParseWikidata, DictionaryEntry):
  • Tier 1 (Lemma/Paradigm level): When --merge-conflicts=false (default) and multiple source files are provided, stages lemmas and preempts any earlier (lemma, PartOfSpeech) paradigm superseded by a later source file before generating inflection patterns (inflectional.xml) or surface forms (dictionary.lst), preventing orphaned surface forms and inflated pattern counts.
  • Tier 2 (Surface-form level): Tracks per-PartOfSpeech provenance (sourceIndex) inside DictionaryEntry so same-POS surface-form collisions from a later source replace earlier ones while preserving non-conflicting parts of speech (e.g., keeping interjection from an earlier source when a later source adds noun) and intra-file homographs.
• Testing (ParseWikidataTest):
  • Added unit tests and test fixtures covering standalone DMLex parsing, multi-source Wikidata + DMLex override (--merge-conflicts=false), cross-source union merging (--merge-conflicts=true), partial multi-POS overrides, space/comma-separated file lists, CLI option compatibility (--map-grammeme, --expand-grammemes, --ignore-property, --ignore-entries-with-grammemes, --exclude-language), and schema validation errors.