feat(scripts): add wallet-operator mapper for consolidation analysis

[lrsaturnino]

Add comprehensive wallet-operator mapping toolset for beta staker consolidation analysis. Enables identification of wallets containing deprecated operators and BTC distribution calculations.

Core functionality:

• query-dkg-events.js: Extracts operator membership from on-chain DKG events
• analyze-per-operator.js: Calculates BTC distribution by provider
• validate-operator-list.js: Verifies operator list completeness

Configuration:

• operators.json: Defines KEEP (4 active) vs DISABLE (16 deprecated) operators
• Contract ABIs for Bridge and WalletRegistry interactions
• Archive node RPC support for historical event queries

Documentation:

• README: Usage guide and integration points
• Manual sweep procedures and execution scripts
• Operator consolidation communication guidelines

Integration:

• Provides data source for monitoring dashboard
• Supports draining progress assessment
• Enables manual sweep decision-making

Technical details:

• Uses threshold cryptography (51/100 signatures)
• Queries sortition pool for operator address resolution
• Classifies operators by provider (STAKED, P2P, BOAR, NUCO)