feat: Implement Fusion

[QEDK]

• Implements arbitrary ERC20 asset staking
• Custom Fusion interface
• Message passing using Avail enshrined AMB
• Implements withdrawals, reward claims, unbonding, compounding , setcontroller
• Implements pulls, extracts, unstaking, boost, deposits
• Implements message bundles and execute() bundling function
• Implements pausability
• Implements access control for pool updation and upgrades