Add a few std::moves to fix Coverity warnings

src/DebugLogger.cc

@@ -113,7 +113,7 @@ void DebugLogger::EnableStreams(const char* s) {
         if ( util::starts_with(ltok, "plugin-") ) {
             // Cannot verify this at this time, plugins may not
             // have been loaded.
-            enabled_streams.insert(ltok);
+            enabled_streams.insert(std::move(ltok));
             goto next;
         }
 

src/Func.cc

@@ -866,7 +866,7 @@ static std::set<EventGroupPtr> get_func_groups(const std::vector<AttrPtr>& attrs
         }
 
         auto group = event_registry->RegisterGroup(EventGroupKind::Attribute, v->AsStringVal()->ToStdStringView());
-        groups.insert(group);
+        groups.insert(std::move(group));
     }
 
     return groups;

src/logging/Manager.cc

@@ -811,7 +811,7 @@ bool Manager::TraverseRecord(Stream* stream, Filter* filter, RecordType* rt, Tab
         }
 
         // Alright, we want this field.
-        filter->indices.push_back(new_indices);
+        filter->indices.push_back(std::move(new_indices));
 
         // Static cast this to void* to avoid a clang-tidy warning about converting from the
         // double-pointer to void*