rss: Add crates:name and crates:version extension fields

Author: Turbo87

src/tests/worker/rss/snapshots/all__worker__rss__sync_updates_feed__sync_updates_feed-2.snap

@@ -15,37 +15,49 @@ expression: content
             <link>https://crates.io/crates/foo/1.2.0</link>
             <guid>https://crates.io/crates/foo/1.2.0</guid>
             <pubDate>Sat, 22 Jun 2024 15:57:19 +0000</pubDate>
+            <crates:name>foo</crates:name>
+            <crates:version>1.2.0</crates:version>
         </item>
         <item>
             <title>foo v1.1.0</title>
             <link>https://crates.io/crates/foo/1.1.0</link>
             <guid>https://crates.io/crates/foo/1.1.0</guid>
             <pubDate>Sat, 22 Jun 2024 08:30:01 +0000</pubDate>
+            <crates:name>foo</crates:name>
+            <crates:version>1.1.0</crates:version>
         </item>
         <item>
             <title>bar v3.0.0-beta.1</title>
             <link>https://crates.io/crates/bar/3.0.0-beta.1</link>
             <description><![CDATA[let&apos;s try &amp; break this &lt;item&gt;]]></description>
             <guid>https://crates.io/crates/bar/3.0.0-beta.1</guid>
             <pubDate>Fri, 21 Jun 2024 17:03:45 +0000</pubDate>
+            <crates:name>bar</crates:name>
+            <crates:version>3.0.0-beta.1</crates:version>
         </item>
         <item>
             <title>foo v1.0.0</title>
             <link>https://crates.io/crates/foo/1.0.0</link>
             <guid>https://crates.io/crates/foo/1.0.0</guid>
             <pubDate>Fri, 21 Jun 2024 17:01:33 +0000</pubDate>
+            <crates:name>foo</crates:name>
+            <crates:version>1.0.0</crates:version>
         </item>
         <item>
             <title>foo v0.1.1</title>
             <link>https://crates.io/crates/foo/0.1.1</link>
             <guid>https://crates.io/crates/foo/0.1.1</guid>
             <pubDate>Thu, 20 Jun 2024 12:45:12 +0000</pubDate>
+            <crates:name>foo</crates:name>
+            <crates:version>0.1.1</crates:version>
         </item>
         <item>
             <title>foo v0.1.0</title>
             <link>https://crates.io/crates/foo/0.1.0</link>
             <guid>https://crates.io/crates/foo/0.1.0</guid>
             <pubDate>Thu, 20 Jun 2024 10:13:54 +0000</pubDate>
+            <crates:name>foo</crates:name>
+            <crates:version>0.1.0</crates:version>
         </item>
     </channel>
 </rss>

src/worker/jobs/rss/sync_updates_feed.rs

@@ -103,12 +103,33 @@ impl VersionUpdate {
             .description
             .map(|d| quick_xml::escape::escape(&d).to_string());
 
+        let name_extension = rss::extension::Extension {
+            name: "crates:name".into(),
+            value: Some(self.name),
+            ..Default::default()
+        };
+
+        let version_extension = rss::extension::Extension {
+            name: "crates:version".into(),
+            value: Some(self.version),
+            ..Default::default()
+        };
+
+        let extensions = vec![
+            ("name".to_string(), vec![name_extension]),
+            ("version".to_string(), vec![version_extension]),
+        ];
+        let extensions = extensions.into_iter().collect();
+        let extensions = vec![("crates".to_string(), extensions)];
+        let extensions = extensions.into_iter().collect();
+
         rss::Item {
             guid: Some(guid),
             title: Some(title),
             link: Some(link),
             description,
             pub_date: Some(pub_date),
+            extensions,
             ..Default::default()
         }
     }