Add the new way to restore or delete public cloud archive sessions

The OVH api has changed for delete or restore an session in the public cloud archive. 
```
POST /cloud/{serviceName}/pca/{pcaServiceName}/tasks 
```
is replaced by 
```
DELETE /cloud/{serviceName}/pca/{pcaServiceName}/sessions/{sessionId} 
```
[source for delete](https://api.ovh.com/console/#/cloud/%7BserviceName%7D/pca/%7BpcaServiceName%7D/sessions/%7BsessionId%7D#DELETE)
```
POST /cloud/{serviceName}/pca/{pcaServiceName}/sessions/{sessionId}/restore
```
[source for restore](https://api.ovh.com/console/#/cloud/%7BserviceName%7D/pca/%7BpcaServiceName%7D/sessions/%7BsessionId%7D/restore#POST)