Update project configuration options in Instance dashboards to use GraphQL queries/mutations

Problem to solve

The Instance level dashboard supports configurations based on project. For the sake of expediting delivery we used existing REST endpoints in the initial implementation of the Standalone Vulnerabilities MVC. This ticket tracks the need to update that implementation to use GraphQL endpoints instead.

This includes the "Edit Dashboard" button pictured here

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And the "Add a project to your dashboard" view pictured here

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Intended users

• Sam (Security Analyst)

Design & Experience

The design remains unchanged from how it displays to customers today.

Documentation

Existing functionality not changing => no doc updates needed

Links / references

Implementation

• frontend create a new first-class-project-manager component that uses GraphQL over Vuex and that replaces the project_manager.vue component, per this discussion