refactor: Replace Rollup with Vite (#2656)

This is a high risk change: every byte the card ships is emitted by a
different bundler, minified by a different minifier, and every
stylesheet is compiled by a different sass. The intent is that the
card's behaviour is unchanged.

**Significant development win**: Build time drops from 24s to 1.1s 🎉 

Also adds a test suite ('dist') that runs against the built bundle.

src/camera-manager/engine-factory.ts

@@ -8,6 +8,9 @@ import type { HomeAssistant } from '../ha/types';
 import { RecordingSegmentsCache } from './cache';
 import type { CameraManagerEngine } from './engine';
 import { CameraNoEntityError } from './error';
+// Every other engine subclasses GenericCameraManagerEngine so it is loaded no
+// matter what -- no lazy loading is useful.
+import { GenericCameraManagerEngine } from './generic/engine-generic';
 import { CameraManagerRequestCache, Engine, type CameraEventCallback } from './types';
 import { getCameraEntityFromConfig } from './utils/camera-entity-from-config';
 
@@ -36,7 +39,6 @@ export class CameraManagerEngineFactory {
     let cameraManagerEngine: CameraManagerEngine;
     switch (engine) {
       case Engine.Generic:
-        const { GenericCameraManagerEngine } = await import('./generic/engine-generic');
         cameraManagerEngine = new GenericCameraManagerEngine(
           options.hassManager,
           this._entityRegistryManager,