Add EMV Build/Parse ARQC Data and Parse EMV TLV operations (issues #11)
- EMV Build ARQC Data: assembles 10-field CDOL1 preimage from args; outputs hex (chainable into EMV Generate ARQC), JSON, or annotated TLV
- EMV Parse ARQC Data: inverse; parses flat 33-byte CDOL1 hex back into named fields
- Parse EMV TLV: BER-TLV parser with 102-entry EMV tag dictionary; handles constructed/nested tags, 1- and 2-byte tags, long-form lengths; dictionary mode lists all known tags
- Shared libs: EmvCdol.mjs (CDOL1 field defs), EmvTlv.mjs (parser), EmvTlvDictionary.mjs (tag dict)
- 12 new tests in Payment.mjs covering all three operations
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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