refactor: make shared_qobject_ptr ctor explicit

This turns issues like creating two shared ptrs from a single raw ptr
from popping up at runtime, instead making them a compile error.

Signed-off-by: flow <flowlnlnln@gmail.com>

launcher/net/Upload.cpp

@@ -233,7 +233,7 @@ namespace Net {
     }
 
     Upload::Ptr Upload::makeByteArray(QUrl url, QByteArray *output, QByteArray m_post_data) {
-        auto* up = new Upload();
+        auto up = makeShared<Upload>();
         up->m_url = std::move(url);
         up->m_sink.reset(new ByteArraySink(output));
         up->m_post_data = std::move(m_post_data);