AccessControl: frontend changes for adding FGAC to licensing (#39484)

* refactor licenseURL function to use context and export permission evaluation fction

* remove provisioning file

* refactor licenseURL to take in a bool to avoid circular dependencies

* remove function for appending nav link, as it was only used once and move the function to create admin node

* better argument names

* create a function for permission checking

* extend permission checking when displaying server stats

* enable the use of enterprise access control actions when evaluating permissions

* import ordering

* move licensing FGAC action definitions to models package to allow access from oss

* move evaluatePermissions for routes to context serve

* change permission evaluator to take in more permissions

* move licensing FGAC actions again to appease wire

* avoid index out of bounds issue in case no children are passed in when creating server admin node

* simplify syntax for permission checking

Co-authored-by: Alex Khomenko <Clarity-89@users.noreply.github.com>

* update loading state for server stats

* linting

* more linting

* fix test

* fix a frontend test

* update "licensing.reports:read" action naming

* UI doesn't allow reading only licensing reports and not the rest of licensing info

Co-authored-by: Alex Khomenko <Clarity-89@users.noreply.github.com>

pkg/api/navlinks/navlinks.go

@@ -0,0 +1,20 @@
+package navlinks
+
+import "github.com/grafana/grafana/pkg/api/dtos"
+
+func GetServerAdminNode(children []*dtos.NavLink) *dtos.NavLink {
+	url := ""
+	if len(children) > 0 {
+		url = children[0].Url
+	}
+	return &dtos.NavLink{
+		Text:         "Server Admin",
+		SubTitle:     "Manage all users and orgs",
+		HideFromTabs: true,
+		Id:           "admin",
+		Icon:         "shield",
+		Url:          url,
+		SortWeight:   dtos.WeightAdmin,
+		Children:     children,
+	}
+}