[ESI][Runtime] Disable warnings from json library

The nlohmann JSON library emits a ton of covered switch warnings. Use
'#pragma' to suppress them.

Author: teqdruid

lib/Dialect/ESI/runtime/cpp/lib/Manifest.cpp

@@ -16,7 +16,10 @@
 #include "esi/Accelerator.h"
 #include "esi/Services.h"
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wcovered-switch-default"
 #include <nlohmann/json.hpp>
+#pragma GCC diagnostic pop
 #include <sstream>
 
 using namespace ::esi;

lib/Dialect/ESI/runtime/cpp/tools/esiquery.cpp

@@ -21,7 +21,10 @@
 #include <algorithm>
 #include <iostream>
 #include <map>
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wcovered-switch-default"
 #include <nlohmann/json.hpp>
+#pragma GCC diagnostic pop
 #include <stdexcept>
 #include <string>