perf: add cmd enable config & fix announce request timeout & fix send card with disconnect ai platform (#1633)

* add cmd config && fix bugs

* perf: use `get`

* update bansess fix block match rule

* perf: comment for access-control session str

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Co-authored-by: Junyan Qin <rockchinq@gmail.com>

templates/config.yaml

@@ -2,6 +2,7 @@ admins: []
 api:
     port: 5300
 command:
+    enable: true
     prefix:
     - '!'
     - ！