feat(package): add commit info to raw list output

`xst package list --raw` output has a new entry for each package.
`commit` is either `null` or, when repo:meta/@commit-id is found
an object with

- **id**: the value of @commit-id, the hash from which this XAR was built
- **time**: the value of @commit-time

modules/list-packages.xq

@@ -84,6 +84,7 @@ function local:repo($package-uri as xs:string) as map(*) {
 
     return
         map {
+            "commit": local:commit-info($repo/repo:meta),
             "website": $repo//repo:website/text(),
             "description": $repo//repo:description/text(),
             "license": $repo//repo:license/text(),
@@ -94,6 +95,16 @@ function local:repo($package-uri as xs:string) as map(*) {
         }
 };
 
+declare
+function local:commit-info ($meta as element(repo:meta)) as map(*)? {
+    if (exists($meta/@commit-id)) then (
+        map {
+            "id": $meta/@commit-id/string(),
+            "time": $meta/@commit-time/string()
+        }
+    ) else ()
+};
+
 declare
 function local:get-deployment-date ($expath, $repo) {
     let $doc :=

spec/tests/package/list.js

@@ -204,14 +204,33 @@ test('with new package', async function (t) {
     st.end()
   })
 
+  t.test('raw output includes commit info', async function (st) {
+    const { stderr, stdout } = await run('xst', ['package', 'list', '--raw'], asAdmin)
+    if (stderr) {
+      st.fail(stderr)
+      st.end()
+      return
+    }
+    const json = JSON.parse(stdout)
+    const filtered = json.packages.filter(p => p.abbrev === 'test-app')
+    st.equal(filtered.length, 1)
+    const packageInfo = filtered.pop()
+    st.ok(packageInfo.commit)
+    st.equal(packageInfo.commit.id, 'e039b2e12f9882375701c7cfd58f5ee32fd7bbd4')
+    st.equal(packageInfo.commit.time, '1674564361')
+    st.end()
+  })
+
   t.teardown(cleanup)
 })
 
 test('error', async function (t) {
   const { stderr, stdout } = await run('xst', ['pkg', 'ls', '-a', '-l'], asAdmin)
   if (stdout) {
     t.fail(stdout)
+    t.end()
     return
   }
-  t.ok(stderr, stderr)
+  t.equal(stderr, 'Arguments a and l are mutually exclusive\n')
+  t.end()
 })