Rename Renderer::create to Renderer::init

All functions that the create/destroy a global static singleton should
use the names init and shutdown, while any static functions that
return/take a new object should use the names create and destroy.

e.g.
void Renderer::init() and void Renderer::shutdown()
Window* Window::create() and void Window::destroy(Window* window)

engine/src/render/renderer.cpp

@@ -15,7 +15,7 @@ using namespace Nova;
 
 static std::unique_ptr<RenderDriver> s_driver;
 
-void Renderer::create(const RenderAPI api) {
+void Renderer::init(const RenderAPI api) {
 	NOVA_AUTO_TRACE();
 	NOVA_ASSERT(!s_driver);
 	switch (api) {