Replace lit-analyzer dependency in favor of ts-lit-plugin

[Abdón Rodríguez]

Replace lit-analyzer dependency in favor of ts-lit-plugin.

Add this in the tsconfig.json:

"plugins": [
  {
    "name": "ts-lit-plugin",
    "strict": true
  }
]

Also remove the lit:type-checking script, because with the typescript:type-checking will be enough.

---

Depends on: runem/lit-analyzer#82
Fixed by: runem/lit-analyzer@83d49d7

Now waiting the new release.

[Abdón Rodríguez]

Closing because runem/lit-analyzer#82 (comment)