message: [frameworks] Update "blitz" properties to match legacy detection
  A simple update to the framework array, updating the blitz properties to
  match the legacy framework. This PR detects a `blitz.config.(ts|js)`
  file which is specific to the legacy framework. With the blitz 2.0
  update the framework detection should automatically be next.js.
diff: @@ -18,22 +18,20 @@ const { readdir, readFile, unlink } = promises;
  export const frameworks = [
  {
  - name: 'Blitz.js',
  + name: 'Blitz.js (Legacy)',
  slug: 'blitzjs',
  demo: 'https://blitz-template.vercel.app',
  logo: 'https://api-frameworks.vercel.sh/framework-logos/blitz.svg',
  tagline: 'Blitz.js: The Fullstack React Framework',
  description:
  - 'A brand new Blitz.js app - the result of running `npx blitz new`.',
  + 'A brand new Blitz.js app - the result of running `npx blitz@0.45.4 new`.',
  website: 'https://blitzjs.com',
  envPrefix: 'NEXT_PUBLIC_',
  useRuntime: { src: 'package.json', use: '@vercel/next' },
  detectors: {
  every: [
  {
  - path: 'package.json',
  - matchContent:
  - '"(dev)?(d|D)ependencies":\\s*{[^}]*"blitz":\\s*".+?"[^}]*}',
  + path: 'blitz.config.(js|ts)',
  },
  ],
  },
  