ui: tape: add Edit Windows

includes edit windows for
* Drives
* Changers
* Media Pools
* Labeling Media
* Making new Tape Backups

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

www/tape/window/TapeBackup.js

@@ -0,0 +1,43 @@
+Ext.define('PBS.TapeManagement.TapeBackupWindow', {
+    extend: 'Proxmox.window.Edit',
+    alias: 'pbsTapeBackupWindow',
+
+    subject: gettext('Backup'),
+    url: '/api2/extjs/tape/backup',
+    method: 'POST',
+    showTaskViewer: true,
+    isCreate: true,
+
+    items: [
+	{
+	    xtype: 'pbsDataStoreSelector',
+	    fieldLabel: gettext('Datastore'),
+	    name: 'store',
+	},
+	{
+	    xtype: 'pbsMediaPoolSelector',
+	    fieldLabel: gettext('Media Pool'),
+	    name: 'pool',
+	},
+	{
+	    xtype: 'proxmoxcheckbox',
+	    name: 'export-media-set',
+	    fieldLabel: gettext('Export Media Set'),
+	    listeners: {
+		change: function(cb, value) {
+		    let me = this;
+		    let eject = me.up('window').down('proxmoxcheckbox[name=eject-media]');
+		    if (value) {
+			eject.setValue(false);
+		    }
+		    eject.setDisabled(!!value);
+		},
+	    },
+	},
+	{
+	    xtype: 'proxmoxcheckbox',
+	    name: 'eject-media',
+	    fieldLabel: gettext('Eject Media'),
+	},
+    ],
+});