ci: add CI covering KMS deps

Signed-off-by: Xynnn007 <[email protected]>

.github/workflows/kms.yml

@@ -0,0 +1,54 @@
+name: KMS CI
+on:
+  push:
+    paths:
+      - 'deps/kms/**'
+      - '.github/workflows/kms.yml'
+  pull_request:
+    paths:
+      - 'deps/kms/**'
+      - '.github/workflows/kms.yml'
+  create:
+    paths:
+      - 'deps/kms/**'
+      - '.github/workflows/kms.yml'
+
+jobs:
+  crypto_ci:
+    if: github.event_name == 'pull_request'
+    name: Check
+    runs-on: ubuntu-20.04
+    strategy:
+      fail-fast: false
+
+    steps:
+      - name: Code checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 1
+
+      - name: Install Rust toolchain (stable)
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          components: rustfmt
+
+      - name: Run rust fmt check
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: -p kms -- --check
+
+      - name: Run rust lint check
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: -p kms --all-features
+
+      - name: Run cargo test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: -p kms --all-features