DAO Smart Contract Setup with OpenZeppelin

[yehia67]

Description

Set up the foundational DAO smart contracts using OpenZeppelin's battle-tested governance contracts. This will provide the core governance infrastructure including token-based voting, proposal management, and execution mechanisms.
We'll use OpenZeppelin's Governor contract and related modules to build a secure, standard-compliant DAO structure.
Reference: https://docs.openzeppelin.com/contracts/4.x/api/governance

###Acceptance Criteria

• Install OpenZeppelin Contracts library
• Deploy governance token contract (ERC20Votes or equivalent for Flow)
• Deploy Governor contract with basic configuration
• Configure voting parameters (voting delay, voting period, proposal threshold)
• Implement Timelock controller for proposal execution delay
• Set up contract deployment scripts
• Verify contracts are deployed and accessible on Flow testnet
• Document contract addresses and basic interaction patterns