Import upstream v0.16.22, stripped

Upstream commit: 474dd0229cb20cf513036619781ed97bd8073c3f
Enterprise-only files removed or emptied: 63
Enterprise-only snippets removed: 117 in 50 files
Dangling module declarations removed: 5
Cargo edits turning enterprise off: 14
Verification: clean
Enterprise feature gates left for rebuilt features: 19 in 18 files

Produced by tools/fork/strip.py. The full report is in docs/fork/strip-reports/ on main.

tests/resources/imap-test/append-binary

@@ -0,0 +1,39 @@
+capabilities: BINARY
+state: created
+
+ok append $mailbox ~{{{
+From: [email protected]
+Date: Sat, 24 Mar 2007 23:00:00 +0200
+Mime-Version: 1.0
+Content-Type: application/octet-stream
+Content-Transfer-Encoding: binary
+
+nil
+
+
+
+}}}
+
+ok select $mailbox
+
+# should have been converted to base64, or something
+ok fetch 1 (body.peek[1])
+! 1 fetch (body[1] {{{
+nil
+
+}}})
+! 1 fetch (body[1] {{{
+nil
+
+}}})
+! 1 fetch (body[1] ~{{{
+nil
+
+
+}}})
+
+ok fetch 1 (binary.size[1] binary.peek[1])
+! 1 fetch (binary.size[1] 6 binary[1] ~{{{
+nil
+
+}}})