Feat: delete template button (#3781)

* Add api call

* Extract DropDownButton

* Start adding DropdownButton to Template page

* Move stories to dropdown button

* Format

* Update xservice to delete

* Deletion flow

* Format

* Move ErrorSummary for consistency

* RBAC (unfinished) and style tweak

* Format

* Test rbac

* Format

* Move ErrorSummary under PageHeader in workspace and template

* Format

* Replace hook with onBlur

* Make style arg optional

* Format

site/src/api/api.ts

@@ -153,6 +153,11 @@ export const updateTemplateMeta = async (
   return response.data
 }
 
+export const deleteTemplate = async (templateId: string): Promise<TypesGen.Template> => {
+  const response = await axios.delete<TypesGen.Template>(`/api/v2/templates/${templateId}`)
+  return response.data
+}
+
 export const getWorkspace = async (
   workspaceId: string,
   params?: TypesGen.WorkspaceOptions,