Add PRX/Stub Library Example/Guide

Dynamic Link is an essential part in PSP Programming. It's also the foundation of PSPSDK and CFW. However, current website doesn't include such guide on how to write export table, generate .S stub etc. One has to dive into Makefiles to figure out the complete process.

I'd like to add a guide to the current website that includes:

• How to build PRX for others to use

  • How to write C code for PRX program (module_start/module_stop)
  • How to write export table
  • How to use psp-build-exports -b to convert export table into C code
  • How to write correct Makefile (-nostartfiles flags etc)
  • How to generate .S file using psp-build-exports -k
  • How to generate .a Stub Library using psp-ar

• How to load PRX dynamically

  • System Calls such as sceKernelLoadModule, sceKernelFindModuleByUID, sceKernelStartModule (? Not quite familiar with this part)
  • What .S file does and how psp-fixup-imports works

• Other Topics

  • Kernel Module / User Module(?) Calling Constraints(?)

Looking forward to your suggestions!

Start by surveying the current website and the existing Makefiles that the issue says readers must inspect. Research the PRX build and dynamic-loading workflow around psp-build-exports, psp-ar, psp-fixup-imports, and the listed system calls. Done means the website has a coherent guide covering the requested build, loading, stub-library, and module-constraint topics.