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/include/stratosphere/sm/sm_scoped_holder.hpp

@@ -21,14 +21,14 @@
 namespace sts::sm {
 
     /* Utility, for scoped access to libnx services. */
-    template<Result Initializer(), void Finalizer()>
+    template<auto Initializer(), void Finalizer()>
     class ScopedServiceHolder {
         NON_COPYABLE(ScopedServiceHolder);
         private:
             Result result;
             bool has_initialized;
         public:
-            ScopedServiceHolder(bool initialize = true) : result(ResultSuccess), has_initialized(false) {
+            ScopedServiceHolder(bool initialize = true) : result(ResultSuccess()), has_initialized(false) {
                 if (initialize) {
                     this->Initialize();
                 }
@@ -43,7 +43,7 @@ namespace sts::sm {
             ScopedServiceHolder(ScopedServiceHolder&& rhs) {
                 this->result = rhs.result;
                 this->has_initialized = rhs.has_initialized;
-                rhs.result = ResultSuccess;
+                rhs.result = ResultSuccess();
                 rhs.has_initialized = false;
             }