chore: remove gitleaks file and add it into build

Author: AhmedAmineZr

.github/workflows/build.yml

@@ -62,6 +62,26 @@ jobs:
           cd ouds_theme_sosh
           flutter test
 
+  gitleaks:
+    name: Gitleaks Secret Scanning
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    permissions:
+      contents: read
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          fetch-depth: 0
+
+      - name: Run Gitleaks Scan
+        run: |
+          curl -sSfL https://github.com/gitleaks/gitleaks/releases/download/v8.24.3/gitleaks_8.24.3_linux_x64.tar.gz -o /tmp/gitleaks.tar.gz
+          tar -xzf /tmp/gitleaks.tar.gz -C /tmp
+          sudo mv /tmp/gitleaks /usr/local/bin/gitleaks
+          gitleaks detect --source . --config .gitleaks.toml -v --redact
+        continue-on-error: true
+
   build-android:
     runs-on: ubuntu-latest
     needs: test