Add elixir-project test folder

Author: jgarber623-cargosense

test/elixir-project/test.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+
+set -e
+
+# Optional: Import test library bundled with the devcontainer CLI
+# shellcheck source=/dev/null
+source dev-container-features-test-lib
+
+# Feature-specific tests
+check "environment" bash -c "env | grep ERL_AFLAGS"
+check "gitignore" grep -xF .bash_history .gitignore
+
+# Report result
+reportResults