add sync to gitee ci

.github/workflows/sync_gitee.yml

@@ -0,0 +1,48 @@
+# This is a basic workflow to help you get started with Actions
+
+name: sync code to gitee
+
+# Controls when the action will run. Triggers the workflow on push or pull request
+# events but only for the master branch
+# on:
+#   push:
+#     branches: [ master ]
+#   pull_request:
+#     branches: [ master ]
+on: 
+  # Triggers the workflow on push or pull request events but only for the main branch
+  push:
+    branches: [ main ]
+  # pull_request:
+  #   branches: [ main ]
+
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  sync_gitee:
+    name: sync repo to gitee
+    # Only run job for specific repository
+    if: github.repository == 'sipeed/MaixPy'
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - name: checkout code from github
+        uses: actions/checkout@v2
+
+      # Runs a set of commands using the runners shell
+      - name: sync shell cmd
+        run: |
+          GITEE_GIT_ADDR="git@gitee.com:Sipeed/MaixPy.git"
+          git fetch --unshallow
+          SSHPATH="$HOME/.ssh"
+          rm -rf "$SSHPATH"
+          mkdir -p "$SSHPATH"
+          echo "${{ secrets.GITEE_SYNC_ACCESSS_KEY }}" > "$SSHPATH/id_rsa"
+          chmod 600 "$SSHPATH/id_rsa"
+          sudo sh -c "echo StrictHostKeyChecking no >>/etc/ssh/ssh_config"
+          git remote add upstream $GITEE_GIT_ADDR
+          git push upstream main:main --force