Add ThreadSafeArrayReturn cpp class attribute

[Kimeek42]

Problem - The way ACT handles array returning is not thread safe in C++.

auto object = library()->getObject();
	for (int i = 0; i < 3; ++i)
	{
		std::thread([object ]() {
			for (int j = 0; j < 100; ++j)
			{
				std::string array = object->getArray();
			}
		}).detach();
	}

Even though getArray is a function that only returns simple string, it may crash because under the hood there is reset call on std::unique_ptr and it's not thread safe operation.

Solution - Add new class attribute that will ensure thread safe array return. To enable this feature just add arrayReturnOption="ThreadSafe" in class component definition:

<class name="Object" arrayReturnOption="ThreadSafe">
	<method name="getArray">
		...

It will add mutex to the class declaration and lock it every time array is being returned from the function:

class CObject: public CBase {
private:
    std::mutex ArrayReturnMutex;
public:
    ...

std::string CObject::getArray(const std::string & sType, const std::string & sLocation)
{
    std::lock_guard<std::mutex> lock(ArrayReturnMutex);
    eagleapi_librarymanager_getstorageid(m_pHandle, sType.c_str(), sLocation.c_str(), 0, &bytesNeededStorageId, nullptr));
    std::vector<char> bufferStorageId(bytesNeededStorageId);
    eagleapi_librarymanager_getstorageid(m_pHandle, sType.c_str(), sLocation.c_str(), bytesNeededStorageId, &bytesWrittenStorageId, &bufferStorageId[0]));
    
    return std::string(&bufferStorageId[0]);
}