feat: account multicall module

[0xrajath]

Motivation:

We need a Rewards Claimer that allows multiple rewards to be claimed with the Llama account as the caller.
This can be achieved through a generic Account Multicall module.

Modifications:

• LlamaAccountMulticallFactory - To deploy the account multicall modules.
• LlamaBaseAccountExtension - Base Account Extension contract with onlyDelegateCall modifier
• LlamaAccountMulticallGuard - Guard on top of Llama Account's execute function.
• LlamaAccountMulticallExtension - A multicall extension for the Llama Account with authorized targets and selectors
• LlamaAccountMulticallStorage - Account Multicall Storage contract (To prevent storage collision with Llama Account while being delegate-called)
• Account Multicall deploy scripts and input config.
• Tests

Result:

Account Multicall module.

Gas Report:

forge test --match-test=test_Multicall --gas-report

[0xrajath]

@AustinGreen Thoughts on renaming this to Llama Account Multi Call module? That's essentially what this is at the end of the day. We could then just have this as a generalized account multicall setup that can be used for any purpose that needs the account to call directly.

[0xrajath]

@AustinGreen Thoughts on renaming this to Llama Account Multi Call module? That's essentially what this is at the end of the day. We could then just have this as a generalized account multicall setup that can be used for any purpose that needs the account to call directly.

I've gone ahead and done this.

[github-actions]

Coverage after merging rajath/rewards-claim into main will be

100.00%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src/account-multicall
LlamaAccountMulticallExtension.sol	94.12%	75%	100%	100%	55
LlamaAccountMulticallFactory.sol	100%	100%	100%	100%
LlamaAccountMulticallGuard.sol	100%	100%	100%	100%
LlamaAccountMulticallStorage.sol	100%	100%	100%	100%
src/token-voting
LlamaTokenGovernor.sol	99.68%	98.78%	100%	100%	830
LlamaTokenVotingFactory.sol	88.89%	66.67%	100%	100%	67–68
src/token-voting/token-adapters
LlamaTokenAdapterVotesTimestamp.sol	100%	100%	100%	100%