refactor: rename zoom function

src/render/Renderer.cpp

@@ -86,7 +86,7 @@ void Renderer::Resize(int width, int height) {
 	glViewport(0, 0, width, height);
 }
 
-void Renderer::SetZoom(float zoom) {
+void Renderer::AddZoom(float zoom) {
 	m_Camera.CamPos.y = std::max(1.0f, m_Camera.CamPos.y - zoom);
 	m_Camera.CamDistance = std::max(1.0f, m_Camera.CamDistance - zoom);
 	SetCamLook(m_Camera.CamLook);