CHANGE: @W-19582414@ Export ViolationCounts

[randi274]

This PR:

• Exports ViolationCounts for external use

[randi274]

I first hoisted this into output-format.ts, but that felt strange since I wasn't using it in there, but I could do that to make this look cleaner if it's preferable

[stephen-carter-at-sf]

Instead of exporting this from the top level... I'd prefer if we instead switched to use "exports" instead of "main" sort of like we do with our engine-api module. See: https://github.com/forcedotcom/code-analyzer-core/blob/dev/packages/code-analyzer-engine-api/package.json#L13-L16

Then you can put an index.ts inside of the output-formats folder... so that the import over on the MCP tool provider side looks something like

import { ViolationCounts } from "@salesforce/code-analyzer-core/output-formats"