[3PP] Replaced cpptoml with tomlplusplus

Also adjusted code that used cpptoml to be used with toml++ and some more changes

third_party/tomlplusplus.lua

@@ -0,0 +1,13 @@
+group("third_party")
+project("tomlplusplus")
+  uuid("1e86cc51-3f8b-476d-9249-3b200424846b")
+  if os.istarget("android") then
+    -- ndk-build only supports StaticLib and SharedLib.
+    kind("StaticLib")
+  else
+    kind("Utility")
+  end
+  language("C++")
+  files({
+    "tomlplusplus/include/toml++/toml.hpp"
+  })