`werf dismiss` v2

[ilya-lesikov]

Before proceeding

• [X] I didn't find a similar issue

Problem

In werf v2 werf dismiss still works using the old deployment engine.

Solution (if you have one)

We should migrate it to Nelm.

Additional information

Refs: werf/nelm#99, werf/nelm#109, werf/nelm#60