[project] Add project enablewarnings

Author: Jarod42

projects/enablewarnings/Readme.md

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+## enablewarnings
+
+Test [`enablewarnings`](https://premake.github.io/docs/enablewarnings)

projects/enablewarnings/failed_build_expected

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+if (_ACTION == nil) then
+	return
+end
+
+local LocationDir = "solution/%{_ACTION}"
+
+workspace "Project"
+	location(LocationDir)
+	configurations {"Debug", "Release"}
+
+	objdir(path.join(LocationDir, "obj")) -- premake adds $(configName)/$(AppName)
+	targetdir(path.join(LocationDir, "bin/%{cfg.buildcfg}"))
+	startproject "app"
+
+project "app"
+	kind "ConsoleApp"
+	targetname "app"
+
+	files { "src/main.cpp" }
+
+	fatalwarnings "All"
+
+	filter "toolset:msc*"
+		enablewarnings {
+			"4061", -- enumerator '%identifier' in a switch of enum '%enum' is not explicitly handled by a case label
+			"4062", -- enumerator '%identifier' in a switch of enum '%enum' is not handled
+		}
+	filter "toolset:not msc*"
+		enablewarnings {
+			"switch"
+		}
+	filter {}

projects/enablewarnings/premake5.lua

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+enum E
+{
+	A,
+	B
+};
+
+
+void foo(E e) {
+	switch (e) {
+		case E::A: break;
+		// missing case E::B
+	}
+} 
+
+int main()
+{
+}