feat: support pull requests

Support for pull requests, it's not standard in NIPs yet[1] but there must be
two clients that support it to be included in NIPs, n34 is one of them.

This support:
- Create a new PR `n34 pr new`
- Update PR tip `n34 pr update`
- View a PR `n34 pr view`
- List PRs `n34 pr list`
- Add `PR` and `PR-update` kinds as roots in `NostrClient::find_root`
- Support issuing statuses for PRs
- Support GRASP PR and PR-update
- Update the docs

[1] https://github.com/nostr-protocol/nips/pull/1966

src/cli/commands/pr/reopen.rs

@@ -0,0 +1,74 @@
+// n34 - A CLI to interact with NIP-34 and other stuff related to codes in nostr
+// Copyright (C) 2025 Awiteb <a@4rs.nl>
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://gnu.org/licenses/gpl-3.0.html>.
+
+use clap::Args;
+
+use crate::{
+    cli::{
+        CliOptions,
+        patch::PatchPrStatus,
+        traits::CommandRunner,
+        types::{EntityType, NaddrOrSet, NostrEvent},
+    },
+    error::{N34Error, N34Result},
+};
+
+#[derive(Debug, Args)]
+pub struct ReopenArgs {
+    /// Repository addresses
+    ///
+    /// In `naddr` format (`naddr1...`), NIP-05 format (`4rs.nl/n34` or
+    /// `_@4rs.nl/n34`), or a set name like `kernel`, separated by commas.
+    ///
+    /// If omitted, looks for a `nostr-address` file.
+    #[arg(
+        value_name = "NADDR-NIP05-OR-SET",
+        long = "repo",
+        value_delimiter = ','
+    )]
+    naddrs: Option<Vec<NaddrOrSet>>,
+    /// The closed/drafted patch id to reopen it.
+    pr_id:  NostrEvent,
+}
+
+impl CommandRunner for ReopenArgs {
+    async fn run(self, options: CliOptions) -> N34Result<()> {
+        crate::cli::common_commands::patch_pr_status_command::<{ EntityType::PullRequest as u8 }>(
+            options,
+            self.pr_id,
+            self.naddrs,
+            PatchPrStatus::Open,
+            None,
+            Vec::new(),
+            |pr_status| {
+                if pr_status.is_open() {
+                    return Err(N34Error::InvalidStatus(
+                        "You can't open an already open pull request".to_owned(),
+                    ));
+                }
+
+                if pr_status.is_merged_or_applied() {
+                    return Err(N34Error::InvalidStatus(
+                        "You can't open a merged/applied pull request".to_owned(),
+                    ));
+                }
+
+                Ok(())
+            },
+        )
+        .await
+    }
+}