Add Label properties to Scenarios and Actions Objects

[Chris-Turner-NIST]

User Story:

While developing the initial UI for creating Vulntology based representations we realized that it would be quite useful to be able to give each Scenario a text label. This will assist in organizing thoughts if a user is populating more than one of these objects (expected to be quite typical, especially with Actions).

Goals:

Create a new property that allows the addition of a free text shortname.
Limit the length of this label to avoid misuse. (15-20 chars?) The limit will likely be derived from the UI.

Dependencies:

The first draft of the UI should be finalized in a functional PoC so we can see how the size limit should be applied

Acceptance Criteria

• All readme documentation affected by the changes in this issue have been updated.
• A Pull Request (PR) is submitted that addresses the goals of this User Story. This issue is referenced in the PR. If the PR only partially addresses a given User Story, the specific goals addressed are identified in the PR.

{The items above are general acceptance criteria for all User Stories. Please describe anything else that must be completed for this issue to be considered resolved.}

[david-waltermire]

How about we call it name?

[Chris-Turner-NIST]

Review CVE program examples and reuse as needed.