feat: migrate color, logo, and metadata management to `LlamaPolicy`

[AustinGreen]

Motivation:

This is another step towards reducing functionality of the factory and empowering individual llama instances.

Modifications:

• Remove the centralized LlamaPolicyMetadataParamRegistry.sol and let llama instances manage their own color and logo in their LlamaPolicy
• Allow llama instances to manage their own LlamaPolicyMetadata contract in their LlamaPolicy. We still set a default version in the factory.
• Refactor the factory deploy function to use more internal functions. This prevents us from reaching stack too deep errors.

Result:

In the spirit of incremental progress towards a permissionless factory, this PR will still leave us with a hybrid approach. A followup PR can remove the root llama instance and reduce the factory to a single public deploy function.

[github-actions[bot]]

Coverage after merging austin/policy-metadata into main will be

89.33%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src
LlamaCore.sol	99.25%	97.30%	100%	100%	373, 615
LlamaExecutor.sol	80%	50%	100%	100%	33
LlamaFactory.sol	100%	100%	100%	100%
LlamaLens.sol	69.23%	20%	100%	80%	151–152, 155, 155, 155–156, 156, 156–157, 157, 157, 165
LlamaPolicy.sol	100%	100%	100%	100%
LlamaPolicyMetadata.sol	100%	100%	100%	100%
src/accounts
LlamaAccount.sol	100%	100%	100%	100%
src/lib
Checkpoints.sol	55.88%	50%	81.82%	53.62%	125, 179–181, 181, 181–182, 184, 187, 217, 224, 224–226, 228, 228–230, 232, 232–234, 236, 236–238, 257, 260–266, 273, 46, 46–48, 48, 48–49, 51
ERC721NonTransferableMinimalProxy.sol	72.46%	72.73%	72.73%	72.22%	102, 104, 106, 118, 190, 88, 88, 88, 90, 90, 90, 92, 92, 92, 97, 99
LlamaUtils.sol	50%	25%	66.67%	60%	11, 17, 17, 17–18
src/llama-scripts
LlamaGovernanceScript.sol	50%	33.33%	43.75%	53.45%	106–108, 115–117, 125–128, 135–137, 146–150, 157–158, 166–168, 67, 74, 74, 76, 89–90, 97–98
src/strategies
LlamaAbsolutePeerReview.sol	94.44%	88.89%	100%	100%	37, 40
LlamaAbsoluteQuorum.sol	92.86%	85.71%	100%	100%	24, 27
LlamaAbsoluteStrategyBase.sol	94.87%	87.50%	90.91%	98.04%	258, 261, 309
LlamaRelativeQuorum.sol	96.23%	85.71%	100%	100%	210, 213, 238, 329