Add .ignore files to avoid searching asset folders

tests/benchmarks/run-benchmarks.sh

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 if ! which hyperfine > /dev/null 2>&1; then
     echo "'hyperfine' does not seem to be installed."
     echo "You can get it here: https://github.com/sharkdp/hyperfine"