feat: slither wokflow config

.github/workflows/slither.yml

@@ -0,0 +1,26 @@
+name: Slither Analysis
+on: [push]
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+    steps:
+      - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
+
+      - name: Run Slither
+        uses: crytic/slither-action@6ef3a33e56de4e8f59488cf60858b5c1bf4967c0 # v0.3.0
+        id: slither
+        with:
+          sarif: results.sarif
+          fail-on: none
+          target: contracts/
+
+      - name: Upload SARIF file
+        uses: github/codeql-action/upload-sarif@461ef6c76dfe95d5c364de2f431ddbd31a417628 # v3.26.9
+        with:
+          sarif_file: ${{ steps.slither.outputs.sarif }}