scripts: add warnet install script

scripts/run_warnet.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+if [ ! -d "warnet" ]; then
+    git clone https://github.com/bitcoin-dev-project/warnet
+fi
+
+cd warnet
+
+# TODO: pin to a certain commit
+# git checkout XYZ 
+
+python3 -m venv .venv  # Use alternative venv manager if desired
+source .venv/bin/activate
+pip install --upgrade pip
+pip install -e .
+
+warnet