Show route information in window title

[grolu]

What this PR does / why we need it:

Which issue(s) this PR fixes:
Fixes #1605

Special notes for your reviewer:

Release note:

Route information is now included in the browser window title

[gardener-robot]

@holgerkoser You have pull request review open invite, please check

[holgerkoser]

Suggested change

	const projectName = projectStore.projectName
	const routeParamName = route.params.name
	const pageTitle = route.meta.title ?? route.name
	let titleItems = [pageTitle]
	if (route.meta.namespaced !== false) {
	const locationTitle = [projectName, routeParamName].filter(item => item !== undefined).join('/')
	titleItems.push(locationTitle)
	}
	titleItems = titleItems.filter(item => item?.length)
	if (titleItems.length) {
	appTitle = `${titleItems.join(' • ')} | ${appTitle}`
	}
	const titleItems = []
	const pageTitle = route.meta.title ?? route.name
	if (pageTitle) {
	titleItems.push(pageTitle)
	}
	if (route.meta.namespaced !== false) {
	const projectName = projectStore.projectName
	const routeParamName = route.params.name
	if (routeParamName) {
	titleItems.push([projectName, routeParamName].join('/'))
	} else if (projectName) {
	titleItems.push(projectName)
	}
	}
	if (titleItems.length) {
	appTitle = `${titleItems.join(' • ')} | ${appTitle}`
	}

[holgerkoser]

/lgtm

[petersutter]

/lgtm