Merge branch 'master' into jgrpp

# Conflicts:
#	.github/workflows/ci-build.yml
#	.github/workflows/release-source.yml
#	CMakeLists.txt
#	COMPILING.md
#	src/network/network_survey.cpp
#	src/network/network_survey.h
#	src/openttd.cpp
#	src/tests/CMakeLists.txt

src/script/api/script_object.hpp

@@ -44,6 +44,7 @@ typedef bool (ScriptAsyncModeProc)();
 class ScriptObject : public SimpleCountedObject {
 friend class ScriptInstance;
 friend class ScriptController;
+friend class TestScriptController;
 protected:
 	/**
 	 * A class that handles the current active instance. By instantiating it at