feat(ci): add trufflehog secrets detection (#745)

### What does this PR do?

Adding a GH action to scan for leaked secrets on each commit.

Author: McPatate

.github/workflows/trufflehog.yml

@@ -0,0 +1,26 @@
+name: Secret Leaks
+
+on:
+  push:
+
+jobs:
+  trufflehog:
+    runs-on: ubuntu-latest
+    steps:
+      - shell: bash
+        run: |
+          if [ "${{ github.event_name }}" == "push" ]; then
+            echo "depth=$(($(jq length <<< '${{ toJson(github.event.commits) }}') + 2))" >> $GITHUB_ENV
+            echo "branch=${{ github.ref_name }}" >> $GITHUB_ENV
+          fi
+          if [ "${{ github.event_name }}" == "pull_request" ]; then
+            echo "depth=$((${{ github.event.pull_request.commits }}+2))" >> $GITHUB_ENV
+            echo "branch=${{ github.event.pull_request.head.ref }}" >> $GITHUB_ENV
+          fi
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{env.branch}}
+          fetch-depth: ${{env.depth}}
+      - name: Secret Scanning
+        uses: trufflesecurity/trufflehog@main