Add "bridge-to-l2.sh" script

[bagelface]

Adds script

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# Bridge EigenLayer Operator State from L1 to L2
#
# This script deploys the bridge contracts and bridges operator state
# from an L1 registry coordinator to an L2 mimic contract.
#
# Required Environment Variables:
#   PRIVATE_KEY              - Private key for deployment and transactions
#   L1_RPC_URL               - RPC URL for L1 (e.g., Sepolia)
#   L2_RPC_URL               - RPC URL for L2 (e.g., Gnosis)
#   REGISTRY_COORDINATOR_ADDRESS - L1 registry coordinator to bridge from
#
# Optional Environment Variables:
#   SLOT_NUMBER              - Slot number for mock proof (default: 12345)
#   SKIP_DEPLOY              - Set to "true" to skip deployment and use existing contracts
#   L1_DEPLOY_FILE           - Path to existing L1 deployment file (required if SKIP_DEPLOY=true)
#   L2_DEPLOY_FILE           - Path to existing L2 deployment file (required if SKIP_DEPLOY=true)
#
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