Integrate old bootstrap_tfw_dev.sh into tfw.sh

hack/libhack/common.sh

@@ -5,3 +5,19 @@ pushd() {
 popd() {
     command popd "$@" > /dev/null
 }
+
+spinned() {
+    "$@" &
+    pid=$!
+    spin=("-" "\\" "|" "/")
+
+    echo -n "${spin[0]}"
+    while kill -0 $pid &> /dev/null; do
+        for i in "${spin[@]}"; do
+            echo -ne "\b$i"
+            sleep 0.1
+        done
+    done
+    echo -ne "\b"
+    wait $pid
+}