add slither job

.github/workflows/slither.yml

@@ -0,0 +1,20 @@
+name: Slither Analysis
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+      - release/**
+    tags:
+      - "*"
+
+jobs:
+  analyze:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: crytic/[email protected]
+        with:
+          fail-on: medium