feat: optimised yarn depTree

[admons]

• [x] Tests written and linted
• [x] Documentation written / README.md updated https://snyk.io/docs/snyk-for-node/
• [x] Follows CONTRIBUTING agreement
• [x] Commit history is tidy https://git-scm.com/book/en/v2/Git-Branching-Rebasing
• [ ] Reviewed by Snyk team

What this does

Creates an optimised dep-tree version for yarn by reusing package-lock logic I extracted everything that is shared from package-lock-parser into lock-parser-base

The implications for that ticket is ~220 million nodes for around 900 dependencies

Before this change, yarn projects looks like the right tree while npm projects looks like the left one

[snyksec]

:tada: This PR is included in version 1.31.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: