Add global-project non-project specific configuration

[NightRa]

General summary

The global-project/stack.yaml config properties are ignored when stack is used outside of a project, while only config.yamls configs are used.

This doesn't allow to specify configs which should be used when outside a project, and not global configs which are applied to all projects.

Steps to reproduce

For example, specifying setup-info-locations in global-project/stack.yaml is completely ignored.

Stack version

Stack 2.13 release

Relevant source code

stack/src/Stack/Config.hs

Lines 411 to 423 in 665a184

	loadConfig :: HasRunner env => (Config -> RIO env a) -> RIO env a
	loadConfig inner = do
	mstackYaml <- view $ globalOptsL.to globalStackYaml
	mproject <- loadProjectConfig mstackYaml
	mresolver <- view $ globalOptsL.to globalResolver
	configArgs <- view $ globalOptsL.to globalConfigMonoid
	(stackRoot, userOwnsStackRoot) <- determineStackRootAndOwnership configArgs
	let (mproject', addConfigMonoid) =
	case mproject of
	PCProject (proj, fp, cm) -> (PCProject (proj, fp), (cm:))
	PCGlobalProject -> (PCGlobalProject, id)
	PCNoProject deps -> (PCNoProject deps, id)

(PCGlobalProject, id - should not be id, but the ConfigMonoid of the global-project/stack.yaml)

stack/src/Stack/Config.hs

Lines 483 to 495 in 665a184

	PCGlobalProject -> do
	logDebug "Run from outside a project, using implicit global project config"
	destDir <- getImplicitGlobalProjectDir config
	let dest :: Path Abs File
	dest = destDir </> stackDotYaml
	dest' :: FilePath
	dest' = toFilePath dest
	ensureDir destDir
	exists <- doesFileExist dest
	if exists
	then do
	iopc <- loadConfigYaml (parseProjectAndConfigMonoid destDir) dest
	ProjectAndConfigMonoid project _ <- liftIO iopc

(ProjectAndConfigMonoid project _ - The ConfigMonoid should not be ignored)

Relevant issues

Relevant: #964 was also confused by this behavior