Results: Implement namespaced, type-safe results.

Because I was working on multiple things at once, this commit also:
- Adds wrappers for/linker flags to wrap CXX exceptions to make them
  abort. This saves ~0x8000 of memory in every system module.
- Broadly replaces lines of the pattern if (cond) { return ResultX; }
  with R_UNLESS(!cond, ResultX());.
- Reworks the R_TRY_CATCH macros (and the result macros in general).

stratosphere/loader/source/ldr_loader_service.cpp

@@ -60,7 +60,7 @@ namespace sts::ldr {
             }
         }
 
-        return ResultSuccess;
+        return ResultSuccess();
     }
 
     Result LoaderService::PinTitle(sf::Out<PinId> out_id, const ncm::TitleLocation &loc) {
@@ -80,10 +80,7 @@ namespace sts::ldr {
     }
 
     Result LoaderService::GetProcessModuleInfo(sf::Out<u32> count, const sf::OutPointerArray<ModuleInfo> &out, os::ProcessId process_id) {
-        if (out.GetSize() > std::numeric_limits<s32>::max()) {
-            return ResultLoaderInvalidSize;
-        }
-
+        R_UNLESS(out.GetSize() <= std::numeric_limits<s32>::max(), ResultInvalidSize());
         return ldr::ro::GetProcessModuleInfo(count.GetPointer(), out.GetPointer(), out.GetSize(), process_id);
     }