Cli import arg

[mjkkirschner]

Purpose

Adds another flag to the CLI and WPFCLI - import -i /i - The import flag can be used multiple times when using the -open flag and will instruct dynamo to import an assembly as a node library before running the file referenced by the open command.

an example is:
/o {a_file} /i {dll1.dll} /i {dll2.dll} ;

a few simple tests are added.

This functionality is not added for DynamoSandbox.

This change needs to be documented in the CLI docs.

Declarations

Check these if you believe they are true

• The code base is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning, and are documented in the API Changes document.

Reviewers

@ColinDayOrg
@scottmitchell

FYIs

@smangarole @jhauswirth @sm6srw

[ColinDayOrg]

LGTM.
In the tests it is not immediately clear what the AssertPreviewValue tests are checking for, possibly a comment would help, but not necessarily needed.

[scottmitchell]

LGTM!