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_launch_record.cpp

@@ -45,7 +45,7 @@ namespace sts::pm::info {
 
     Result HasLaunchedTitle(bool *out, ncm::TitleId title_id) {
         *out = ldr::HasLaunchedTitle(title_id);
-        return ResultSuccess;
+        return ResultSuccess();
     }
 
 }