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/libstratosphere/source/pm/pm_dmnt_api.cpp

@@ -39,7 +39,7 @@ namespace sts::pm::dmnt {
         Event evt;
         R_TRY(pmdmntEnableDebugForApplication(&evt));
         *out_handle = evt.revent;
-        return ResultSuccess;
+        return ResultSuccess();
     }
 
     Result AtmosphereGetProcessInfo(Handle *out_handle, ncm::TitleLocation *out_loc, os::ProcessId process_id) {

stratosphere/libstratosphere/source/pm/pm_info_api.cpp

@@ -48,7 +48,7 @@ namespace sts::pm::info {
 
         if (g_cached_launched_titles.find(static_cast<u64>(title_id)) != g_cached_launched_titles.end()) {
             *out = true;
-            return ResultSuccess;
+            return ResultSuccess();
         }
 
         bool has_launched = false;
@@ -58,7 +58,7 @@ namespace sts::pm::info {
         }
 
         *out = has_launched;
-        return ResultSuccess;
+        return ResultSuccess();
     }
 
     bool HasLaunchedTitle(ncm::TitleId title_id) {