fix for file.list api pagination

mdrsclient/api/files.py

@@ -17,10 +17,26 @@ class FilesApiCreateResponse:
     id: str
 
 
+@dataclass(frozen=True)
+class FilesApiListResponse:
+    count: int
+    next: str | None
+    previous: str | None
+    results: list[File]
+
+
 class FilesApi(BaseApi):
     ENTRYPOINT: Final[str] = "v3/files/"
     FALLBACK_MIMETYPE: Final[str] = "application/octet-stream"
 
+    def list(self, folder_id: str, page_num: int) -> FilesApiListResponse:
+        url = self.ENTRYPOINT
+        token_check(self.connection)
+        params: dict[str, str | int] = {"folder_id": folder_id, "page": page_num}
+        response = self.connection.get(url, params=params)
+        self._raise_response_error(response)
+        return TypeAdapter(FilesApiListResponse).validate_python(response.json())
+
     def retrieve(self, id: str) -> File:
         # print(self.__class__.__name__ + "::" + sys._getframe().f_code.co_name)
         url = self.ENTRYPOINT + id + "/"