message: plugins/tech-radar: add lighthouse api to dev env
diff: import { createDevApp } from '@backstage/dev-utils';
  import { plugin } from '../src/plugin';
  +import { techRadarApiRef, TechRadar } from '../src';
  -createDevApp().registerPlugin(plugin).render();
  +createDevApp()
  + .registerPlugin(plugin)
  + .registerApiFactory({
  + implements: techRadarApiRef,
  + deps: {},
  + factory: () => new TechRadar({ width: 1500, height: 800 }),
  + })
  + .render();
  