rpc_wrappers: kv_read: add vla_from_buffer_copy

Add a `vla_from_buffer_copy` method to the response decoder so it is
broadly compatible with `VLACompatLittleEndianStruct`.

Signed-off-by: Jordan Yates <jordan@embeint.com>

Author: JordanYates

src/infuse_iot/rpc_wrappers/kv_read.py

@@ -20,7 +20,7 @@ class request(ctypes.LittleEndianStructure):
 
     class response:
         @classmethod
-        def from_buffer_copy(cls, source: bytes, _offset: int = 0):
+        def from_buffer_copy(cls, source: bytes, _offset: int = 0) -> list:
             values = []
             while len(source) > 0:
 
@@ -50,6 +50,10 @@ class kv_store_value(ctypes.LittleEndianStructure):
                 source = source[ctypes.sizeof(struct) :]
             return values
 
+        @classmethod
+        def vla_from_buffer_copy(cls, source: bytes, offset: int = 0) -> list:
+            return cls.from_buffer_copy(source, offset)
+
     @classmethod
     def add_parser(cls, parser):
         parser.add_argument("--keys", "-k", required=True, type=int, nargs="+", help="Keys to read")