Add OSSAR workflow for static analysis

.github/workflows/ossar.yml

@@ -0,0 +1,55 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+# This workflow integrates a collection of open source static analysis tools
+# with GitHub code scanning. For documentation, or to provide feedback, visit
+# https://github.com/github/ossar-action
+name: OSSAR
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: ["main"]
+  schedule:
+    - cron: "45 8 * * 0"
+
+permissions:
+  contents: read
+
+jobs:
+  OSSAR-Scan:
+    # OSSAR runs on windows-latest.
+    # ubuntu-latest and macos-latest support coming soon
+    permissions:
+      contents: read # for actions/checkout to fetch code
+      security-events: write # for github/codeql-action/upload-sarif to upload SARIF results
+      actions: read # only required for a private repository by github/codeql-action/upload-sarif to get the Action run status
+    runs-on: windows-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Ensure a compatible version of dotnet is installed.
+      # The [Microsoft Security Code Analysis CLI](https://aka.ms/mscadocs) is built with dotnet v3.1.201.
+      # A version greater than or equal to v3.1.201 of dotnet must be installed on the agent in order to run this action.
+      # GitHub hosted runners already have a compatible version of dotnet installed and this step may be skipped.
+      # For self-hosted runners, ensure dotnet version 3.1.201 or later is installed by including this action:
+      # - name: Install .NET
+      #   uses: actions/setup-dotnet@v4
+      #   with:
+      #     dotnet-version: '3.1.x'
+      # Run open source static analysis tools
+      - name: Run OSSAR
+        uses: github/ossar-action@v1
+        id: ossar
+
+        # Upload results to the Security tab
+      - name: Upload OSSAR results
+        uses: github/codeql-action/upload-sarif@v3
+        with:
+          sarif_file: ${{ steps.ossar.outputs.sarifFile }}