Add tabSync option

[xtoolkit]

hi i add tab sync option with storage event

how to use?

1. initial your key data (like with syncUniversal method).
2. next enable track your key with enableTabTrack method.
3. you can disable track key with disableTabTrack
4. now your key sync in all tabs in your browser

example:

this.keyname = 'appAuthorize';

// initial data
this.$storage.syncUniversal(this.keyname , {
    login: false,
    token: '',
    ...
);

// enable key track
this.$storage.enableTabTrack(this.keyname );

[xtoolkit]

hello!?!

[SebastianMieszczanczyk]

@pi0 could you check it please? It is a nice feature which I need