cli: implement jj gerrit send for sending changes to Gerrit

cli/Cargo.toml

@@ -22,7 +22,7 @@ include = [
     "/tests/",
     "!*.pending-snap",
     "!*.snap*",
-    "/tests/[email protected]"
+    "/tests/[email protected]",
 ]
 
 [[bin]]
@@ -64,6 +64,7 @@ esl01-renderdag = { workspace = true }
 futures = { workspace = true }
 git2 = { workspace = true }
 gix = { workspace = true }
+hex = { workspace = true }
 indexmap = { workspace = true }
 indoc = { workspace = true }
 itertools = { workspace = true }
@@ -74,6 +75,7 @@ once_cell = { workspace = true }
 pest = { workspace = true }
 pest_derive = { workspace = true }
 pollster = { workspace = true }
+rand = { workspace = true }
 rayon = { workspace = true }
 regex = { workspace = true }
 rpassword = { workspace = true }

cli/src/commands/gerrit/mod.rs

@@ -0,0 +1,57 @@
+// Copyright 2024 The Jujutsu Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+use std::fmt::Debug;
+
+use clap::Subcommand;
+
+use crate::cli_util::CommandHelper;
+use crate::command_error::CommandError;
+use crate::commands::gerrit;
+use crate::ui::Ui;
+
+/// Interact with Gerrit Code Review.
+#[derive(Subcommand, Clone, Debug)]
+pub enum GerritCommand {
+    /// Send changes to Gerrit for code review, or update existing changes.
+    ///
+    /// Sending in a set of revisions to Gerrit creates a single "change" for
+    /// each revision included in the revset. This change is then available for
+    /// review on your Gerrit instance.
+    ///
+    /// This command modifies each commit in the revset to include a `Change-Id`
+    /// footer in its commit message if one does not already exist. Note that
+    /// this ID is NOT compatible with jj IDs, and is Gerrit-specific.
+    ///
+    /// If a change already exists for a given revision (i.e. it contains the
+    /// same `Change-Id`), this command will update the contents of the existing
+    /// change to match.
+    ///
+    /// Note: this command takes 1-or-more revsets arguments, each of which can
+    /// resolve to multiple revisions; so you may post trees or ranges of
+    /// commits to Gerrit for review all at once.
+    Send(gerrit::send::SendArgs),
+}
+
+pub fn cmd_gerrit(
+    ui: &mut Ui,
+    command: &CommandHelper,
+    subcommand: &GerritCommand,
+) -> Result<(), CommandError> {
+    match subcommand {
+        GerritCommand::Send(review) => gerrit::send::cmd_send(ui, command, review),
+    }
+}
+
+mod send;