Data Connections: Create a new top-level page (#50018)

* Feature Flags: introduce a flag for enabling the Data Connections page

* Feature Flags: generate schemas

* Navigation: add navigation weight for the Data Connections page

* NavLink: add a comment pointing out where icon names can be looked up

* NavTree: add a new page called Data Connections

* fix(Api): prefix the navigation IDs with the parent ("data-connections")

* feat(Frontend): add a basic page with four tabs

* feat(Plugins): add a hook for importing an app plugin

* feat(Plugins): add a component for loading app plugins anywhere

* feat(Data Connections): load the cloud-onboarding app under the "Cloud onboarding" tab

* feat(Data Connections): generate a proper nav model to highlight active tabs

* test(Data Connections): add tests

* refactor(Data Connections): update temporary text content

This is only used as a placeholder until the tabs are under development.

* refactor(Data Cnnnections): move /pages to /tabs

* refactor(Data Connections): remove the `types.ts` file as it is not referenced by any module

* feat(Data Connections): only register routes if feature is enabled

pkg/services/featuremgmt/registry.go

@@ -240,6 +240,10 @@ var (
 		{
 			Name:        "logRequestsInstrumentedAsUnknown",
 			Description: "Logs the path for requests that are instrumented as unknown",
+		},
+		{
+			Name:        "dataConnectionsConsole",
+			Description: "Enables a new top-level page called Data Connections. This page is an experiment for better grouping of installing / configuring data sources and other plugins.",
 			State:       FeatureStateAlpha,
 		},
 	}

pkg/services/featuremgmt/toggles_gen.go

@@ -178,4 +178,8 @@ const (
 	// FlagLogRequestsInstrumentedAsUnknown
 	// Logs the path for requests that are instrumented as unknown
 	FlagLogRequestsInstrumentedAsUnknown = "logRequestsInstrumentedAsUnknown"
+
+	// FlagDataConnectionsConsole
+	// Enables a new top-level page called Data Connections. This page is an experiment for better grouping of installing / configuring data sources and other plugins.
+	FlagDataConnectionsConsole = "dataConnectionsConsole"
 )