feat: supports functions in bash/js/python/ruby (#6)

sh/get_current_weather.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -e
+
+# @describe Get the current weather in a given location.
+# @option --location! The city and optionally the state or country, e.g., "London", "San Francisco, CA".
+
+main() {
+    curl -fsSL "https://wttr.in/$(echo "$argc_location" | sed 's/ /+/g')?format=4&M"
+}
+
+eval "$(argc --argc-eval "$0" "$@")"