feat(#3037): Add custom HTTP header support to Python client (#3038)

* feat(#3037): Add custom HTTP header support to Python client

* Modify typing

* Remove Python 3.12 support

streampipes-client-python/streampipes/client/client.py

@@ -137,6 +137,7 @@ def __init__(
         # this allows to centrally determine the behavior of all requests made
         self.request_session = Session()
         self.request_session.headers.update(self.http_headers)
+        self.request_session.headers.update(self.client_config.additional_headers)
 
         self.logging_level = logging_level
         self._set_up_logging(logging_level=self.logging_level)  # type: ignore

streampipes-client-python/streampipes/client/config.py

@@ -20,8 +20,8 @@
 """
 
 
-from dataclasses import dataclass
-from typing import Optional
+from dataclasses import dataclass, field
+from typing import Dict, Optional
 
 __all__ = [
     "StreamPipesClientConfig",
@@ -49,6 +49,8 @@ class StreamPipesClientConfig:
     port: Optional[int]
         Specifies the port under which the StreamPipes API is available,
         e.g., `80` (with http) or `443` (with https)
+    additional_headers: Optional[Dict[str, str]]
+        Specifies additional HTTP headers that should be sent with each request, e.g., proxy headers
 
     Examples
     --------
@@ -61,3 +63,6 @@ class StreamPipesClientConfig:
     host_address: str
     https_disabled: Optional[bool] = False
     port: Optional[int] = 80
+    additional_headers: Optional[Dict[str, str]] = field(default_factory=dict)
+
+