bots: Migrate script name from zulip-terminal to zulip-bot-shell.

This change is intended to reduce confusion between zulip-bot-shell
(test bots interactively without a server) and the zulip/zulip-terminal
project and its associated command (zulip-term).

Author: neiljp

zulip_bots/setup.py

@@ -52,7 +52,7 @@
     entry_points={
         "console_scripts": [
             "zulip-run-bot=zulip_bots.run:main",
-            "zulip-terminal=zulip_bots.terminal:main",
+            "zulip-bot-shell=zulip_bots.terminal:main",
         ],
     },
 )  # type: Dict[str, Any]