Put dev package to folder which is not a parent folder for submodules

# Problem
dev package is parent for submodules and therefore its `node_modules` are shared for all of them and we can build a submodule thinking it is working as intented but without parent node_modules it will not build - for example in github modules. The same story occurs in another way. Package can be buildable in github actions but can break because of parent node_modules
Imlicitly installed packages from parent `node_modules` are misleading

## Wrong imports
Because dev is dependent on diplinks, and diplinks is its child, we can take and import in diplinks diplinks from dev dependencies.

# How to fix it
Put dev to a dev folder which will not be a parent folder for submodules

# Note
Scripts are written for the current state of the dev repository and we should change code related to the paths in dev scripts.