Updates to benchmark scripts, added install for gitleaks

.leaky-meta/benchmark.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+source ./install-test-tools.sh
+python benchmark.py

.leaky-meta/install-test-tools.sh

@@ -1,7 +1,14 @@
 #!/bin/bash
-if if ! type "pip" > /dev/null; then
+if ! type "pip" > /dev/null
+then
     echo "Pip and Python are required for installing detect-secrets and truffleHog, but pip was not found!"
     exit 1
 fi
 
+mkdir -p ~/.local/bin
+if [ ! -f ~/.local/bin/gitleaks ]; then
+    wget https://github.com/zricethezav/gitleaks/releases/download/v2.1.0/gitleaks-linux-amd64 -O ~/.local/bin/gitleaks
+    chmod +x ~/.local/bin/gitleaks
+fi
+
 pip install detect-secrets truffleHog