🔧 Only enable IPO per default for Release builds outside of deployment (

#841)

## Description

Basically the PR title. From past experience, IPO can make debugging
quite hard.
This PR ensures that, at least in non-release builds, IPO is not enabled
by default.
As such, no manual workarounds should be necessary anymore for
debugging.

This change transitively propagates to all dependants of MQT Core once
they update to the latest version.

@ystade tagging for awareness

## Checklist:

- [x] The pull request only contains commits that are related to it.
- [x] I have added appropriate tests and documentation.
- [x] I have made sure that all CI jobs on GitHub pass.
- [x] The pull request introduces no new warnings and follows the
project's style guidelines

Signed-off-by: burgholzer <burgholzer@me.com>

cmake/StandardProjectSettings.cmake

@@ -57,7 +57,8 @@ if(DEPLOY)
       CACHE STRING "" FORCE)
 endif()
 
-if(NOT DEPLOY)
+# try to enable inter-procedural optimization per default for Release builds outside of deployment
+if(NOT DEPLOY AND CMAKE_BUILD_TYPE STREQUAL "Release")
   option(ENABLE_IPO "Enable Interprocedural Optimization, aka Link Time Optimization (LTO)" ON)
 else()
   option(ENABLE_IPO "Enable Interprocedural Optimization, aka Link Time Optimization (LTO)" OFF)