RBAC: Add scope resolvers for dashboards (#50110)

* Inject access control into dashboard service

* Add function to parse id scopes

* Add dashboard as return value

* Update mock

* Return only err to keep service interface

* Add scope resolvers for dashboard id scopes

* Add function to parse uid scopes

* Add dashboard uid scope resolver

* Register scope resolvers for dashboards

Co-authored-by: Gabriel MABILLE <gamab@users.noreply.github.com>

pkg/services/accesscontrol/scope.go

@@ -2,6 +2,7 @@ package accesscontrol
 
 import (
 	"fmt"
+	"strconv"
 	"strings"
 )
 
@@ -9,6 +10,26 @@ const (
 	maxPrefixParts = 2
 )
 
+func ParseScopeID(scope string) (int64, error) {
+	id, err := strconv.ParseInt(ScopeSuffix(scope), 10, 64)
+	if err != nil {
+		return 0, ErrInvalidScope
+	}
+	return id, nil
+}
+
+func ParseScopeUID(scope string) (string, error) {
+	uid := ScopeSuffix(scope)
+	if len(uid) == 0 {
+		return "", ErrInvalidScope
+	}
+	return uid, nil
+}
+
+func ScopeSuffix(scope string) string {
+	return scope[len(ScopePrefix(scope)):]
+}
+
 func GetResourceScope(resource string, resourceID string) string {
 	return Scope(resource, "id", resourceID)
 }