feat(analyzer): Add Healthcare identifiers recognizer

[bhargavikalicheti]

Change Description

Adds conservative, context-aware US healthcare identifier recognizers to Presidio Analyzer.

New disabled-by-default recognizers:

• US_HEALTH_INSURANCE_MEMBER_ID
• US_PRIOR_AUTHORIZATION_NUMBER
• US_CLAIM_NUMBER
• US_PRESCRIPTION_NUMBER
• US_REFERRAL_NUMBER
• US_PROVIDER_TAX_ID

These recognizers require both a plausible identifier pattern and nearby healthcare/insurance workflow context to reduce false positives. They also include negative-context checks for similar-looking non-healthcare IDs such as order numbers, tracking numbers, case numbers and invoice numbers where applicable.

Issue reference

Fixes Feature Request: Healthcare Recognizer for Common Healthcare Identifiers (Member ID, Claims, Prior Authorization, etc.)
#2136

Checklist

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