Stop Qodo's unsolicited responses in threads

When Qodo posts a review comment, sometimes the humans want to have a
conversation in this thread. Qodo often decides to participate in these
conversations, posting walls of text that completely drown out any
meaningful communication with noise.

Worse, Qodo seems incapable of shutting up even when explicitly told to
do so [1] [2]. Luckily, there is a deterministic kill switch.

Note that it is still possible to explicitly ask for Qodo's feedback
using the /ask command in a thread.

[1]: #78 (comment)
[2]: #81 (comment)

Signed-off-by: Adam Cmiel <acmiel@redhat.com>

Author: chmeliik

.pr_agent.toml

@@ -16,3 +16,6 @@ comments_location_policy = "both"
 #   2=remediation_recommended
 #   1=informational
 inline_comments_severity_threshold = 3
+
+[pr_code_suggestions]
+enable_chat_in_code_suggestions = false