ci: add script for automating common sync

ci/common_sync/common_repo_sync.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+GH_USER="$GH_TREZOR_BOT"
+GH_TOKEN="$GH_TOKEN_COMMON_SYNC"
+
+# checkout to temporary branch
+git checkout -B tmp
+
+# setup trezor-common remote
+git remote add sync-common https://$GH_USER:$GH_TOKEN@github.com/trezor/trezor-common.git 2>/dev/null
+
+# top commit in HEAD before monorepo was introduced
+TOP_COMMIT_IN_COMMON=893fd219d4a01bcffa0cd9cfa631856371ec5aa9
+
+# convert contents of the repository so that common/ is the root
+git filter-repo --refs $TOP_COMMIT_IN_COMMON..HEAD --subdirectory-filter=common/ --force
+
+# filter out .gitrepo
+git filter-repo --refs $TOP_COMMIT_IN_COMMON..HEAD --path .gitrepo --invert-paths
+
+# push changes to trezor-common repository
+git push sync-common tmp:master
+
+# cleanup
+git remote remove sync-common

ci/deploy.yml

@@ -239,3 +239,19 @@ ui tests core fixtures deploy:
     - rsync --delete -va ci/ui_test_records/* "$DEPLOY_PATH"
   tags:
     - deploy
+
+# common sync to trezor-common
+
+common sync:
+  stage: deploy
+  variables:
+    GIT_SUBMODULE_STRATEGY: "none"
+    GIT_STRATEGY: clone  # clone entire repo instead of reusing workspace
+    GIT_DEPTH: 0  # avoid shallow clone
+  only:
+    - schedules
+  needs: []
+  before_script: []  # no poetry
+  script:
+    - echo "Synchronizing common with the trezor-common repository"
+    - ./ci/common_sync/common_repo_sync.sh