fix: add missing body_type "163" (#317)

Fix for wuwentao/midea_ac_lan#341

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-->

## Summary by CodeRabbit

- **New Features**
- Introduced a new body type classification, `A3`, enhancing the
existing options for users.

This update allows for more detailed categorization of body types within
the application.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

midealocal/message.py

@@ -14,6 +14,7 @@ class BodyType(IntEnum):
 
     A0 = 0xA0
     A1 = 0xA1
+    A3 = 0xA3
     A4 = 0xA4
     AA = 0xAA
     B0 = 0xB0