feat(oscal): link remapper method component defn

[meganwolf0]

Description

Added a new method to component definition - RewritePaths
Intent of this method is to facilitate aggregation of data in component definitions (e.g., via Compose functionality) where the references contained therein may be relative to said component definition. This method should also have extensibility to be used for a future packaging type workflow where we may wish to pull disaggregated OSCAL models into a centralized, opinionated structure. Hence, this method may make sense to add to the interface when it's been implemented across models.

Notes to reviewers

• I updated the network function GetLocalFileDir - before it was doing a file existence check which I think is probably not needed in this function itself. Removal allowed for easier testing.
• This currently incorporates OSCALModel interface implementation for Component Definitions #747 and OSCALModel interface implementation for Assessment Results #748 since I needed the interface to be implemented in component definition, so those should probably be approved/merged first - this makes seeing the changes a little harder, but the main methods are in src/pkg/common/common.go

Related Issue

Fixes #878

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Other (security config, docs update, etc)

Checklist before merging

• Test, docs, adr added or updated as needed
• Schema Updates applied
• Contributor Guide Steps followed