Feat: Add Foundry broadcasts to deployments mapping

[jamesmccomish]

Problem

The deployments mapping in FoundryConfig is useful for attaching contracts to addresses. But often when developing locally in a monorepo I run anvil (or a local fork) and deploy my contracts there. The addresses might change as the contracts change, and keeping the deployments mapping updated is awkward, it seems like a small addition to wagmi/cli could make this a lot easier.

wagmi/site/cli/api/plugins/foundry.md

Lines 52 to 57 in 29f95df

	### deployments
	`{ [key: string]: address?: Address | Record<chainId, Address> | undefined } | undefined`
	Mapping of addresses to attach to artifacts.

Update

This PR adds a flag includeBroadcasts which automatically populates the deployments mapping with any contracts deployed in a run-latest.json file in the /broadcasts/ folder.

wagmi/packages/cli/src/plugins/foundry.ts

Lines 55 to 62 in 80c777f

	/**
	* Set contracts in `run-latest.json` files in the `broadcast/` directory as deployments.
	*
	* @dev broadcast deployments can be overridden by including the contract in the deployments mapping.
	*
	* @default false
	*/
	includeBroadcasts?: boolean | undefined

With that flag set, running wagmi generate in a local development script after deploying any test contracts locally will take the latest deployment addresses and generate files that can be read by the frontend.

Further Work

I think more info from these broadcast files could be useful to extract too. Things like blockNumber or deployment arguments might be useful for linking to indexers etc.

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