feat: add web_search_cohere tool (#79)

tools/web_search_cohere.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+set -e
+
+# @describe Perform a web search using Cohere API to get up-to-date information or additional context.
+# Use this when you need current information or feel a search could provide a better answer.
+
+# @env COHERE_API_KEY! The api key
+# @option --query! The query to search for.
+
+main() {
+    curl -fsS -X POST https://api.cohere.com/v1/chat \
+     -H "authorization: Bearer $COHERE_API_KEY" \
+     -H "accept: application/json" \
+     -H "content-type: application/json" \
+     --data '
+{
+    "model": "command-r",
+    "message": "'"$argc_query"'",
+    "connectors": [{"id": "web-search"}]
+}
+'  | \
+        jq -r '.text' \
+        >> "$LLM_OUTPUT"
+}
+
+eval "$(argc --argc-eval "$0" "$@")"