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/fatal/source/fatal_task_clock.cpp

@@ -53,7 +53,7 @@ namespace sts::fatal::srv {
                 R_TRY(pcvSetClockRate(module, hz));
             }
 
-            return ResultSuccess;
+            return ResultSuccess();
         }
 
         Result AdjustClockTask::AdjustClock() {
@@ -66,7 +66,7 @@ namespace sts::fatal::srv {
             R_TRY(AdjustClockForModule(PcvModule_GPU,    GPU_CLOCK_307MHZ));
             R_TRY(AdjustClockForModule(PcvModule_EMC,    EMC_CLOCK_1331MHZ));
 
-            return ResultSuccess;
+            return ResultSuccess();
         }
 
         Result AdjustClockTask::Run() {