Add OSV export CI job (#947)

.github/workflows/export-osv.yml

@@ -0,0 +1,28 @@
+name: Export OSV
+
+on:
+  push:
+    branches: main
+
+jobs:
+  publish-web:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          ref: osv-experimental-v0.7
+      - uses: actions/cache@v1
+        with:
+          path: ~/.cargo/bin
+          key: rustsec-admin-v0.5.0
+      - run: |
+          if [ ! -f $HOME/.cargo/bin/rustsec-admin ]; then
+           cargo install rustsec-admin --vers 0.5.0
+          fi
+          mkdir -p crates
+          rustsec-admin osv crates
+          git config user.name github-actions
+          git config user.email github-actions@github.com
+          git add .
+          git commit -m "Update OSV exported data" || true
+          git push || true