feat(console): add support for multiple input files

[meganwolf0]

Description

Supports multiple OSCAL files as input as lula console -f <comma separated list>

This will merge the same model types (where possible) and create an output file name for any models that will be written (currently only component is supported in write, but assuming future models will be added)

Also added an option to specify output file names (again, only component is supported, but as more models get added for "write" capabilities, assuming the flags will grow)

Related Issue

Fixes #728

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

[brandtkeller]

Generally see the intent here.

Would you be open to a future issue around the possibility where a write operation doesn't require the creation of a new file? Something about writes not persisting to the original file feels like a gap we can address in the future.

[brandtkeller]

Conflict needing resolve otherwise looks good.