Support NIP-10 for client interoperability (thread rendering)

[ok300]

Damus currently uses positional "e" tags to mark the root and the parent in threads.

Other clients like Gossip already support NIP-10^1, which deprecates positional "e" tags in favor of marked tags.

This leads to different rendering across clients for threads or standalone notes referencing another note.

---

Here is an example.

The note JSON is

{
  "id": "994a81e7d5137c6fb2e663c91d9436aa32c247f1ae5105c34de924b76cdf51f2",
  "pubkey": "00000000827ffaa94bfea288c3dfce4422c794fbb96625b6b31e9049f729d700",
  "created_at": 1675572483,
  "kind": 1,
  "tags": [
    [ "p", "d5bd2aedd006cf7eda5f39a84c0c1bb98e5f9ac97094631b0ef533d67a0d3896" ],
    [ "e", "ec37c20a54921f48586b4314ea324d499c61649d923615f679684f721c4438c7" ]
  ],
  "content": "Follow #[0] if you haven’t yet and stay tuned to all things Nostr Land!\n\n#[1]",
  "sig": "ce5b4c1dbc844b8e7da96f5061be174ea0f46227a5550574cde2bc4f1380f1ba56fa2fb5ce189ecc2a186fd76deffe0483612a72c6f6dbdbdd12a078901eab7b"
}

In Damus, Cameri's comment appears as standalone note referencing another note:

In Gossip, it appears as a reply in a thread:

In iris.to it also appears as a reply in a thread: