demo manager controller check permission in frontend (#1689)

## Whats added:
- Add display modal with error message in frontend
## Issue(#1676)

Co-authored-by: Arrgentum <ak.votintsev@gmail.com>

Author: Arrgentum

save-frontend/src/main/kotlin/com/saveourtool/save/frontend/components/basic/projects/ProjectDemoMenu.kt

@@ -45,10 +45,13 @@ val projectDemoMenu: FC<ProjectDemoMenuProps> = FC { props ->
                     jsonHeaders,
                     Json.encodeToString(demoRequest),
                     ::loadingHandler,
+                    ::noopResponseHandler,
                 )
                     .let {
                         if (it.ok) {
                             setDemoStatus(DemoStatus.STARTING)
+                        } else {
+                            props.updateErrorMessage(it.statusText, it.unpackMessage())
                         }
                     }
             }
@@ -64,6 +67,7 @@ val projectDemoMenu: FC<ProjectDemoMenuProps> = FC { props ->
         if (statusResponse.ok) {
             setDemoStatus(statusResponse.decodeFromJsonString<DemoStatus>())
         } else {
+            props.updateErrorMessage(statusResponse.statusText, statusResponse.unpackMessage())
             setDemoStatus(DemoStatus.NOT_CREATED)
         }
     }
@@ -81,6 +85,7 @@ val projectDemoMenu: FC<ProjectDemoMenuProps> = FC { props ->
             setDemoToolRequest(demoInfo.demoDto)
             setGithubProjectCoordinates(demoInfo.demoDto.githubProjectCoordinates.orEmpty())
         } else {
+            props.updateErrorMessage(infoResponse.statusText, infoResponse.unpackMessage())
             setDemoStatus(DemoStatus.NOT_CREATED)
         }
     }
@@ -211,4 +216,10 @@ external interface ProjectDemoMenuProps : Props {
      * Organization name
      */
     var organizationName: String
+
+    /**
+     * Callback to show error message
+     */
+    @Suppress("TYPE_ALIAS")
+    var updateErrorMessage: (String, String) -> Unit
 }

save-frontend/src/main/kotlin/com/saveourtool/save/frontend/components/views/ProjectView.kt

@@ -214,6 +214,13 @@ class ProjectView : AbstractView<ProjectViewProps, ProjectViewState>(false) {
         projectDemoMenu {
             projectName = props.name
             organizationName = props.owner
+            updateErrorMessage = { label, message ->
+                setState {
+                    errorLabel = label
+                    errorMessage = message
+                    isErrorOpen = true
+                }
+            }
         }
     }