stabality and performance improvements in minifilter

[sn99]

• Fix issue of floating point operations in kernel driver
• Performance improvements
• Upgrade C standard to C11
• General stability improvements around IRQL, DriverEntry, etc
• Replace ZwClose with FltClose in minifilter to solve potential memory leak
• Refactor code to be more readable and conscience
• Upgrade to c++20 standard for minifilter
• Improve performance of minifilter by using -O2 and -LTO alongside release build
• Stop using debug libraries for minifilter
• Use ExAllocatePool2 instead of ExAllocatePoolWithTag

I was able to build it in Visual Studio (I only checked for 64bit systems both debug and release)

[sn99]

use PCWSTR instead of PWSTR for ComPortName

This would require a change in driver_comm.rs, I will submit a pull

[sn99]

I still have a doubt about irql though https://github.com/RafWu/RansomWatch/issues/6