add deny.toml, update CI to run license checks (#101)

Co-authored-by: aflowers <aflowers@nvidia.com>

.github/workflows/pre-merge-rust.yml

@@ -46,6 +46,11 @@ jobs:
       with:
         path: ~/.cargo/registry
         key: ${{ runner.os }}-cargo-registry-${{ github.head_ref || github.ref_name }}-${{ hashFiles('**/Cargo.lock') }}
+    - name: Cache Cargo Tools
+      uses: actions/cache@v3
+      with:
+        path: ~/.cargo/bin
+        key: ${{ runner.os }}-cargo-tools-${{ hashFiles('**/Cargo.lock') }}
     - name: Set up Rust Toolchain Components
       run: rustup component add rustfmt clippy
     - name: Run Cargo Check
@@ -57,6 +62,12 @@ jobs:
     - name: Run Clippy Checks
       working-directory: runtime/rust
       run: cargo clippy --no-deps --all-targets -- -D warnings
+    - name: Install and Run cargo-deny
+      working-directory: runtime/rust
+      run: |
+        cargo-deny --version || cargo install cargo-deny
+        cargo-deny check --hide-inclusion-graph licenses
+      timeout-minutes: 5
     - name: Run Unit Tests
       working-directory: runtime/rust
       run: cargo test --locked --all-targets

runtime/rust/LICENSE

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runtime/rust/deny.toml

+# SPDX-FileCopyrightText: Copyright (c) 2024-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# cargo-deny plugin for linting dependencies
+# https://github.com/EmbarkStudios/cargo-deny/blob/main/deny.template.toml
+
+[licenses]
+confidence-threshold = 0.93
+allow = [
+    "MIT",
+    "Apache-2.0",
+    "Apache-2.0 WITH LLVM-exception",
+    "ISC",
+    "BSD-2-Clause",
+    "BSD-3-Clause",
+    "OpenSSL",
+    "Unicode-3.0",
+    "BSL-1.0"
+]
+
+[[licenses.clarify]]
+name = "ring"
+expression = "MIT AND ISC AND OpenSSL"
+license-files = [
+    { path = "LICENSE", hash = 0xbd0eed23 }
+]