feat: Move default steps into container

default_steps/step.bash.wget.json

@@ -0,0 +1,18 @@
+{
+  "kind": "vantage.step/v1",
+  "name": "WGET",
+  "description": "",
+  "interpreter": "bash",
+  "script": "out=$(mktemp -p ./)\necho \"Downloading file from $url\"\nwget -q $url -O $out\nretVal=$?\nif [ $retVal -ne 0 ]; then\n    echo \"failed to download file from url\"\n    exit 1\nfi\necho \"FILE_PATH=$out\" \u003e\u003e $WORKFLOW_ENV",
+  "declared_outputs": [
+    "FILE_PATH"
+  ],
+  "declared_inputs": [
+    {
+      "name": "url",
+      "default": "",
+      "description": ""
+    }
+  ],
+  "secret_refs": []
+}