feat(core): Added smarttime dependency and improved changelog generation

ts/plugins.ts

@@ -16,6 +16,7 @@ import * as smartlog from '@push.rocks/smartlog';
 import * as smartlogDestinationLocal from '@push.rocks/smartlog-destination-local';
 import * as smartpath from '@push.rocks/smartpath';
 import * as smartshell from '@push.rocks/smartshell';
+import * as smarttime from '@push.rocks/smarttime';
 
 export {
   npmextra,
@@ -30,6 +31,7 @@ export {
   smartlogDestinationLocal,
   smartpath,
   smartshell,
+  smarttime,
 };
 
 // third party scope