Migrate from setup.py to pyproject.toml (#440)

* Converted setup.py to pyproject.toml

* Modern package infrastructure as recommended by py docs

trustgraph-cli/trustgraph/cli/invoke_llm.py

@@ -0,0 +1,68 @@
+"""
+Invokes the text completion service by specifying an LLM system prompt
+and user prompt.  Both arguments are required.
+"""
+
+import argparse
+import os
+import json
+from trustgraph.api import Api
+
+default_url = os.getenv("TRUSTGRAPH_URL", 'http://localhost:8088/')
+
+def query(url, flow_id, system, prompt):
+
+    api = Api(url).flow().id(flow_id)
+
+    resp = api.text_completion(system=system, prompt=prompt)
+
+    print(resp)
+
+def main():
+
+    parser = argparse.ArgumentParser(
+        prog='tg-invoke-llm',
+        description=__doc__,
+    )
+
+    parser.add_argument(
+        '-u', '--url',
+        default=default_url,
+        help=f'API URL (default: {default_url})',
+    )
+
+    parser.add_argument(
+        'system',
+        nargs=1,
+        help='LLM system prompt e.g. You are a helpful assistant',
+    )
+
+    parser.add_argument(
+        'prompt',
+        nargs=1,
+        help='LLM prompt e.g. What is 2 + 2?',
+    )
+
+    parser.add_argument(
+        '-f', '--flow-id',
+        default="default",
+        help=f'Flow ID (default: default)'
+    )
+
+    args = parser.parse_args()
+
+    try:
+
+        query(
+            url=args.url,
+            flow_id = args.flow_id,
+            system=args.system[0],
+            prompt=args.prompt[0],
+        )
+
+    except Exception as e:
+
+        print("Exception:", e, flush=True)
+
+if __name__ == "__main__":
+    main()