Split workspace-tools package

[ecraig12345]

To reduce the number of dependencies (and possible vulnerabilities) pulled in by other tools/packages that use workspace-tools, we'd like to split the package into more granular parts.

Possible parts include:

• workspace-tools-git: git utilities (Split git and path utilities into packages #179)
• workspace-tools-paths: path utilities (Split git and path utilities into packages #179)
• workspace-tools-types: shared types such as PackageInfo
• workspace-tools-graph: package dependency graph
• others TBD: lock file parsing, getting workspace info, ?