Add ErrorDescription with auth and links

ErrorThrownAction triggers an AUTH_EXPIRED in middleware. AuthReducer
extracts auth links to upddate state.links. It's unclear what the shape
is of auth.links:

  Errors.test.js utilizes an auth.links of type
    arrayOf({
      name: string,
      label:string,
      login: string,
      logout: string,
      callback: string,
    })

  OrganizationsPage consumes links w/ shape of

    shape({
      organizations: string.isRequired,
      config: shape({
        auth: string.isRequired,
      }).isRequired,
    })

  UsersPage consumes links w/ shape of

     shape({
        users: string.isRequired,
      }),

  ProvidersPage consumes links w/ shape of

    shape({
        organizations: string.isRequired,
      }),

  Purgatory consumes links w/ shape of

    shape({
      me: string,
    }),

  UserNavBlock at some point expected

  shape({
    me: string,
    external: shape({
      custom: arrayOf(
        shape({
          name: string.isRequired,
          url: string.isRequired,
        })
      ),
    }),
  })

ui/src/shared/actions/errors.ts

@@ -10,12 +10,12 @@ export type ErrorThrownActionCreator = (
 
 interface ErrorThrownAction {
   type: 'ERROR_THROWN'
-  error: Error
+  error: ErrorDescription
   altText?: string
   alertType?: AlertType
 }
 export const errorThrown = (
-  error: Error,
+  error: ErrorDescription,
   altText?: string,
   alertType?: AlertType
 ): ErrorThrownAction => ({
@@ -24,3 +24,12 @@ export const errorThrown = (
   altText,
   alertType,
 })
+
+interface ErrorDescription {
+  status: number
+  auth: {
+    links: {
+      me: string
+    }
+  }
+}