docs: note Vite 8 native tsconfig paths support in README

[benpsnyder]

Adds a tip callout explaining that Vite 8+ supports tsconfig path resolution natively via resolve.tsconfigPaths, with guidance on when this plugin is still useful (Vite 5-7, lazy discovery, project references, fine-grained control).

Addresses #214.

[aleclarson]

i'd like someone to confirm that these listed benefits are accurate:

[…] or if you need features like lazy discovery, project references, or fine-grained control over which tsconfigs are used

are we sure these are not also supported by Vite 8?

[psychobolt]

@aleclarson Would it be possible to support . paths. That would add my value to using this plugin. For instance . prefix for folders e.g. .storybook/preview . This is working with v6, but in v7 not:

tsconfig.json:

   "paths": {
      ".storybook/*": ["./.storybook/*"],
      "*": ["./src/*"]
    }

Vite Internal server error: Failed to resolve import ".storybook/preview" from
│  "src/Button/Primary.story.ts". Does the file exist?
│  Plugin: vite:import-analysis

Would that be a issue with OXC Resolver? My workaround as referenced: rolldown/rolldown#8822

  resolve: {
      alias: { ".storybook/": fileURLToPath(new URL("./.storybook/", import.meta.url)) },
  }