feat(channel): add channel account event receiver endpoint

backend/mci-server/src/test/resources/sql/test-channel-account.sql

@@ -0,0 +1,13 @@
+SET FOREIGN_KEY_CHECKS = 0;
+
+DELETE FROM mci_channel_event_record;
+DELETE FROM mci_channel_account;
+DELETE FROM mci_tenant;
+
+SET FOREIGN_KEY_CHECKS = 1;
+
+INSERT INTO mci_tenant (id, tenant_code, tenant_name, status, create_time)
+VALUES (1, 'rescue', '救援', 1, NOW());
+
+INSERT INTO mci_channel_account (id, tenant_code, account_type, channel_type, account_id, account_name, login_status, online_status, risk_level, status, create_time)
+VALUES (1, 'rescue', 3, 'wechat_personal', 'wx-bot-01', '测试号', 0, 0, 0, 1, NOW());