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/cfg/cfg_sd_card.cpp

@@ -43,11 +43,11 @@ namespace sts::cfg {
                 bool service_present = false;
                 R_TRY(sm::HasService(&service_present, RequiredServicesForSdCardAccess[i]));
                 if (!service_present) {
-                    return ResultFsSdCardNotPresent;
+                    return fs::ResultSdCardNotPresent();
                 }
             }
 
-            return ResultSuccess;
+            return ResultSuccess();
         }
 
         void WaitSdCardServicesReadyImpl() {
@@ -60,7 +60,7 @@ namespace sts::cfg {
             R_TRY(CheckSdCardServicesReady());
             R_ASSERT(fsOpenSdCardFileSystem(&g_sd_card_filesystem));
             g_sd_card_initialized = true;
-            return ResultSuccess;
+            return ResultSuccess();
         }
 
         void InitializeSdCard() {