Adds supports for approvals from multiple users

Acceptance Criteria

• Until and unless approval task does not get approval from all the users as true, till that approvalState will be wait
• If any one user disapproves the approval task we will mark the approvalState as false and then the pipelinerun will fail
• If a user approves for the first time and still approvalsRequired limit is not reached i.e. approvalState is wait then user can still change his input and mark the approval task as false