feat: add emergency unpause and withdraw makefile targets

[2PykeETH]

Summary

This PR extends the Makefile with additional emergency management shortcuts for interacting with the deployed contract.
These commands enhance the existing emergency-pause functionality by enabling contract unpause and emergency withdrawal execution.

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Changes

makefile

• Added emergency-unpause:
  • Unpauses the contract if previously paused
  • Uses cast send with unpause() call
  • Prints a clear ⚠️ warning message before execution
• Added emergency-withdraw:
  • Executes emergencyWithdraw(address,uint256) on the contract
  • Requires the EMERGENCY_TOKEN environment variable
  • Emits a 🚨 warning for visibility
• Both targets leverage MAINNET_RPC_URL and PRIVATE_KEY for secure execution

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Benefits

• Improves incident response during emergencies:
  • emergency-unpause allows safe contract resumption
  • emergency-withdraw provides a mechanism to safeguard funds
• Provides clear CLI feedback with colored messages (🚨 / ⚠️ indicators)
• Consistent structure with existing emergency-pause target

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Next Steps

• Add testnet equivalents (emergency-unpause-testnet, emergency-withdraw-testnet) for safer dry-runs
• Consider role-based access checks to ensure only authorized operators execute these actions
• Integrate with CI/CD for controlled emergency ops

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Notes

This PR completes the emergency response toolkit in the Makefile, ensuring that critical pause, unpause, and withdrawal operations are easily accessible to operators during urgent scenarios.