Create ManageViaMr component to enable Security features

• Create a ManageViaMr component that triggers a Gql mutation to enable Security features from the conf. page.
  • It should be configurable to accept specific sec. features (TBD) and trigger the corresponding mutation as a result.
    • feature prop: String to specify what feature we're dealing with. Should be one of the REPORT_TYPE_* constants found in app/assets/javascripts/vue_shared/security_reports/constants.js.
    • Internal map of features feature -> GraphQL mutation.
  • It should redirect the user to the successPath provided in the mutation's response.
  • Emit an error event if the mutation errors-out (error should be handled by the parent, to be confirmed).

Specs:

• Mimic manage_sast_spec.js.
  • Triggers the right mutation depending on the provided feature.
  • Loading state.
  • Doesn't render anything when feature is enabled.
  • Emits an error.