feat: expose Everyone group through UI (#9117)

- Allows setting quota allowances on the 'Everyone' group.

site/src/utils/groups.ts

@@ -11,6 +11,18 @@ export const everyOneGroup = (organizationId: string): Group => ({
   source: "user",
 })
 
+/**
+ * Returns true if the provided group is the 'Everyone' group.
+ * The everyone group represents all the users in an organization
+ * for which every organization member is implicitly a member of.
+ *
+ * @param {Group} group - The group to evaluate.
+ * @returns {boolean} - Returns true if the group's ID matches its
+ * organization ID.
+ */
+export const isEveryoneGroup = (group: Group): boolean =>
+  group.id === group.organization_id
+
 export const getGroupSubtitle = (group: Group): string => {
   // It is the everyone group when a group id is the same of the org id
   if (group.id === group.organization_id) {