feat: add jina tools (#73)

tools/fetch_url_via_jina.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -e
+
+# @describe Extract the content from a given URL.
+
+# @env JINA_API_KEY The api key
+# @option --url! The URL to scrape.
+
+main() {
+    curl_args=()
+    if [[ -n "$JINA_API_KEY" ]]; then
+        curl_args+=("-H" "Authorization: Bearer $JINA_API_KEY")
+    fi
+    curl -fsSL "${curl_args[@]}" "https://r.jina.ai/$argc_url" >> "$LLM_OUTPUT"
+}
+
+eval "$(argc --argc-eval "$0" "$@")"