Journaling: search, read and export over JMAP, and the chain check

Phase 4 of the journaling spec.

- inbuxa:JournalEntry/query and /get (sysJournalSearch): filter by time,
  sender, recipient, either, direction, subject words, Message-ID and
  journal, newest first; the whole report only when asked for.
- inbuxa:JournalExport/set (sysJournalExport): a reason is required; a
  ZIP of the matching reports with manifest.csv, exceptions.csv and
  manifest.sha256, up to 10,000 reports and 1 GB.
- inbuxa:JournalVerification/set (sysJournalGet): chains and reports
  rechecked.
- Every search, listing, read, export and check is written to the audit
  log before anything is returned, with existing actions only.
- Catalog entries for the three objects; spec as-built notes.

journal_tests: administrators can't search; a Compliance Officer searches,
lists, reads a report, exports (reason required) and checks the chain;
the officer can't change journals; each of those is in the audit log.

crates/jmap-proto/src/references/resolve.rs

@@ -57,6 +57,7 @@ impl Response<'_> {
                 GetRequestMethod::MailRule(request) => request.resolve_references(self)?,
                 GetRequestMethod::SecurityAcceptance(request) => request.resolve_references(self)?,
                 GetRequestMethod::Journal(request) => request.resolve_references(self)?,
+                GetRequestMethod::JournalEntry(request) => request.resolve_references(self)?,
                 GetRequestMethod::HeldMessage(request) => request.resolve_references(self)?,
                 GetRequestMethod::HoldExport(request) => request.resolve_references(self)?,
                 GetRequestMethod::ProtocolPolicy(request) => request.resolve_references(self)?,
@@ -139,6 +140,12 @@ impl Response<'_> {
                 SetRequestMethod::Journal(request) => {
                     request.resolve_references(self, 1, false)?
                 }
+                SetRequestMethod::JournalExport(request) => {
+                    request.resolve_references(self, 1, false)?
+                }
+                SetRequestMethod::JournalVerification(request) => {
+                    request.resolve_references(self, 1, false)?
+                }
                 SetRequestMethod::HeldMessage(request) => {
                     request.resolve_references(self, 1, false)?
                 }