WIP: Add a research tree view #1

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williamjcm wants to merge 22 commits from research-tree into master
Showing only changes of commit be4d1029c5 - Show all commits

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@ -381,6 +381,7 @@ void ResearchTree::generateArchTree() {
void ResearchTree::readEngineUnlocks(Containers::ArrayView<Int> engines, Containers::ArrayView<Int> gears) {
if(engines == nullptr || engines.size() == 0) {
Utility::Error{} << "Engines can't be empty";
return;
}
for(Int& engine : engines) {