Enhancement: Add System Requirements and Prerequisites to main page?

Hi all

Here follows regarding the current main page a "end-user" related suggestion for improvement. It is currently for a "normal user" not really clear what the effective system requirements of PCSX-redux are. I think a new, short section "System Requirements" right after "What?" would really make sense. This can be just a small addition, nothing deep-technical. Well, yes I am thinking now of something like this here: https://github.com/Cxbx-Reloaded/Cxbx-Reloaded

**System Requirements**
**Minimum**

- OS: Windows 7, Linux (any special kernel requirement?), MacOS (which version?)
- GPU: OpenGL 3.x capable (equivalent to Direct3D 10.0 class hardware)

**Prerequisites**
**Windows**

- 32-bit (x86) Visual C++ 2019 Redistributable for 32bit build of PCSX-redux
- 64-bit (x64) Visual C++ 2019 Redistributable for 64bit build of PCSX-redux
~~- anything more?~~

As mentioned in another thread, I have tried to test my new **8BitDo Pro 2** gamepad under native Windows 7 x64. But unfortunately I failed spectacularly. I was not able to get PCSX-redux working, nor the 32bit, nor the 64bit build. After double-click of the exe file a (smaller) black window opened and closed very fast, nothing else. So if current PCSX-redux builds are really no longer Win 7 compatible this should be mentioned somewhere. ;-)

So for me I can confirm that current PCSX-redux Windows binaries are running better in Wine than on Windows 7. :-D

PS Regarding my Windows 7 test system, - it is also a "potato". But it has a GeForce GT 120 DX10 class GPU and it should work in terms of hardware. The OpenGL Extensions Viewer tool confirms that it is OpenGL 3.3 compliant:
[glview-GeForce GT 120_PCIe_SSE2-6.txt](https://github.com/grumpycoders/pcsx-redux/files/6603941/glview-GeForce.GT.120_PCIe_SSE2-6.txt)