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/sf/cmif/sf_cmif_domain_manager.cpp

@@ -34,11 +34,11 @@ namespace sts::sf::cmif {
     Result ServerDomainManager::Domain::ReserveIds(DomainObjectId *out_ids, size_t count) {
         for (size_t i = 0; i < count; i++) {
             Entry *entry = this->manager->entry_manager.AllocateEntry();
-            R_UNLESS(entry != nullptr, ResultServiceFrameworkOutOfDomainEntries);
+            R_UNLESS(entry != nullptr, sf::cmif::ResultOutOfDomainEntries());
             STS_ASSERT(entry->owner == nullptr);
             out_ids[i] = this->manager->entry_manager.GetId(entry);
         }
-        return ResultSuccess;
+        return ResultSuccess();
     }
 
     void ServerDomainManager::Domain::ReserveSpecificIds(const DomainObjectId *ids, size_t count) {