feat: If need approval to join the group in groupMetadata (#533)

* If need approval to join the group

* If need approval to join the group

* Update groups.ts

* Update groups.ts

* fix lint

* Update groups.ts

* Update groups.ts

---------

Co-authored-by: Bob <115008575+FortisEtMagnus@users.noreply.github.com>
Co-authored-by: Bob <115008575+bobpetrov@users.noreply.github.com>

src/Socket/groups.ts

@@ -339,6 +339,7 @@ export const extractGroupMetadata = (result: BinaryNode) => {
 		announce: !!getBinaryNodeChild(group, 'announcement'),
 		isCommunity: !!getBinaryNodeChild(group, 'parent'),
 		isCommunityAnnounce: !!getBinaryNodeChild(group, 'default_sub_group'),
+		joinApprovalMode: !!getBinaryNodeChild(group, 'membership_approval_mode'),
 		memberAddMode,
 		participants: getBinaryNodeChildren(group, 'participant').map(
 			({ attrs }) => {

src/Types/GroupMetadata.ts

@@ -22,6 +22,8 @@ export interface GroupMetadata {
     announce?: boolean
     /** is set when the group also allows members to add participants */
     memberAddMode?: boolean
+    /** Request approval to join the group */
+    joinApprovalMode?: boolean
     /** is this a community */
     isCommunity?: boolean
     /** is this the announce of a community */