fix(python,scala): enhance deserialization and HTTP header handling

Python: handle non-string input for list types, add dict type deserialization in api_response.py
Scala: add withHeader(key, Option[Any]) overload that skips None values in HttpRequest.scala

Author: Fluf22

clients/algoliasearch-client-python/algoliasearch/http/api_response.py

@@ -68,6 +68,11 @@ def deserialize(klass: Any = None, data: Any = None) -> Any:
             arr = json.loads(data)
             return [ApiResponse.deserialize(sub_kls, sub_data) for sub_data in arr]
 
+        if hasattr(klass, "__origin__") and klass.__origin__ is dict:
+            sub_kls = klass.__args__[1]
+            obj = json.loads(data) if isinstance(data, str) else data
+            return {k: ApiResponse.deserialize(sub_kls, v) for k, v in obj.items()}
+
         if isinstance(klass, str):
             if klass.startswith("List["):
                 sub_kls = match(r"List\[(.*)]", klass)

clients/algoliasearch-client-scala/src/main/scala/algoliasearch/config/HttpRequest.scala

@@ -100,6 +100,13 @@ object HttpRequest {
       this
     }
 
+    def withHeader(key: String, value: Option[Any]): HttpRequest.Builder = {
+      value match {
+        case Some(param) => withHeader(key, param)
+        case None        => this
+      }
+    }
+
     def withHeaders(headers: Map[String, Any]): HttpRequest.Builder = {
       for ((key, value) <- headers)
         withHeader(key, value)