feat: Support podOverrides (#256)

# Description

Blocked by: stackabletech/operator-rs#616

Part of stackabletech/issues#346



Co-authored-by: Sebastian Bernauer <sebastian.bernauer@stackable.de>

Author: razvan

CHANGELOG.md

@@ -11,6 +11,7 @@ All notable changes to this project will be documented in this file.
 - Add support for using custom certificates when accessing S3 with TLS ([#247]).
 - Use bitnami charts for testing S3 access with TLS ([#247]).
 - Set explicit resources on all containers ([#249]).
+- Support pod overrides ([#256])
 
 ### Changed
 
@@ -32,6 +33,7 @@ All notable changes to this project will be documented in this file.
 [#247]: https://github.com/stackabletech/spark-k8s-operator/pull/247
 [#252]: https://github.com/stackabletech/spark-k8s-operator/pull/252
 [#249]: https://github.com/stackabletech/spark-k8s-operator/pull/249
+[#256]: https://github.com/stackabletech/spark-k8s-operator/pull/256
 
 ## [23.4.0] - 2023-04-17