Implement crate publishing on CI (#12768)

* implement crate publishing from CI

* fix indentation

* use resource_group for job exclusivity

ensure that at most one instance of the publish-crates job is running at any given time to prevent race conditions

* correct publish = false

* Remove YAML anchors as GitLab's `extends:` doesn't need it

* Temporarily force cache upload for the new jobs

* Revert `RUSTY_CACHIER_FORCE_UPLOAD`

* pin libp2p-tcp=0.37.0 for sc-telemetry

* Revert "pin libp2p-tcp=0.37.0 for sc-telemetry"

This reverts commit 29146bfad6c31e8cf0e2f17ad92a71bb81a373af.

* always collect generated crates

* increase timeout for publish-crates-template

* Force upload the new job cache again

* Revert "Force upload the new job cache again"

This reverts commit 5a5feee1b2c51fdef768b25a76be4c3949ec1c99.

* reformat

* improve timeout explanation

* s/usual/average

Co-authored-by: Vladimir Istyufeev <vladimir@parity.io>

substrate/scripts/ci/gitlab/pipeline/test.yml

@@ -394,6 +394,19 @@ cargo-check-each-crate:
     - if [ "$CI_NODE_INDEX" == 1 ]; then rusty-cachier cache upload; fi
   parallel: 2
 
+publish-crates-locally:
+  extends:
+    - .test-refs
+    - .crates-publishing-template
+  script:
+    - rusty-cachier snapshot create
+    - git clone
+        --depth 1
+        --branch "$RELENG_SCRIPTS_BRANCH"
+        https://github.com/paritytech/releng-scripts.git
+    - CRATESIO_TARGET_INSTANCE=local ./releng-scripts/publish-crates
+    - rusty-cachier cache upload
+
 cargo-check-each-crate-macos:
   stage: test
   extends: