Fill the incomplete usage of async methods.

[A9G-Data-Droid]

I apologize if I don't know the historical reasons why not all the methods are async. I did a quick review and wanted to share my notes. I hope some of these changes useful.

All tests pass without modification.

• Prefer Task.Run over Task.Factory.StartNew
• Compile in release mode with overflow checks for safety.
• Implement await using when available.
• Remove unused result.GetType();
• CA1835: Prefer the memory-based overloads of ReadAsync/WriteAsync

[adoconnection]

Thanks! Improvements are always welcome 🚀 You mean ReadLong and WriteLong? Well they manipute few bytes so I thought its insignificant, no other reasons