Make tmp files for bundle in `tmp` dir

[blond]

Now index build after build:

_index.css
_index.html
_index.js
index.bemdecl.js
index.bemhtml.bemdecl.js
index.bemhtml.deps.js
index.bemhtml.js
index.bemjson.js
index.browser.bemhtml.js
index.browser.js
index.css
index.deps.js
index.html
index.js
index.noprefix.css
index.pre.js

Expected:

tmp/
_index.css
_index.js
index.bemjson.js
index.html

[tadatuta]

@andrewblond is it possible to move tmp/ to ../../.enb/? ;)

[awinogradov]

:+1: i want this:)

[qfox]

Definitely tmp should be placed in .enb.

[blond]

Closed in favor of https://github.com/enb-make/enb/issues/143