Add workflow for cargo-bloat

.github/workflows/cargo-bloat.yml

@@ -0,0 +1,19 @@
+name: cargo-bloat
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  bloat:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+      - uses: orf/cargo-bloat-action@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}