Transport controller and file model (#42)

* Transport controller and file model

* Use randomBytes intead of pseudoRandomBytes

* Cover all lines with tests

* Update code style

* Update code style

* View for image block

* Fix serving static files

* Mkdir -p for uploads dirs

* Add default secret param

* Add image Tool

* Update src/utils/objects.js

Co-Authored-By: talyguryn <vitalik7tv@yandex.ru>

* Use vars for image tool colors

* Revert var

* Remove --color-gray-border var

* Update src/controllers/transport.js

Co-Authored-By: talyguryn <vitalik7tv@yandex.ru>

* Add mp4 support for Image Tool

src/frontend/styles/vars.pcss

@@ -4,7 +4,6 @@
   --color-line-gray: #E8E8EB;
   --color-link-active: #388AE5;
   --color-button-danger: #ff1629;
-  --color-gray-border: rgba(var(--color-line-gray), 0.48);
 
   /**
    * Site layout sizes