Migrate cli utils to REST API (#239)

* Port a number of commands to use API gateway instead of Pulsar

* Ported tg-invoke-agent to websockets API

* Rename the 2 RAG commands: tg-query-... to tg-invoke-...

trustgraph-cli/scripts/tg-invoke-prompt

@@ -12,15 +12,15 @@ using key=value arguments on the command line, and these replace
 import argparse
 import os
 import json
-from trustgraph.clients.prompt_client import PromptClient
+from trustgraph.api import Api
 
-default_pulsar_host = os.getenv("PULSAR_HOST", 'pulsar://localhost:6650')
+default_url = os.getenv("TRUSTGRAPH_URL", 'http://localhost:8088/')
 
-def query(pulsar_host, template_id, variables):
+def query(url, template_id, variables):
 
-    cli = PromptClient(pulsar_host=pulsar_host)
+    api = Api(url)
 
-    resp = cli.request(id=template_id, variables=variables)
+    resp = api.prompt(id=template_id, variables=variables)
 
     if isinstance(resp, str):
         print(resp)
@@ -35,9 +35,9 @@ def main():
     )
 
     parser.add_argument(
-        '-p', '--pulsar-host',
-        default=default_pulsar_host,
-        help=f'Pulsar host (default: {default_pulsar_host})',
+        '-u', '--url',
+        default=default_url,
+        help=f'API URL (default: {default_url})',
     )
 
     parser.add_argument(
@@ -70,7 +70,7 @@ specified multiple times''',
     try:
 
         query(
-            pulsar_host=args.pulsar_host,
+            url=args.url,
             template_id=args.id[0],
             variables=variables,
         )