Remove package tsconfig-paths and its registrations

[sebastianst]

Since we use 1. #erdstall via an imports config in package.json and 2. a paths translation in tsconfig, we should be able to remove the package tsconfig-paths and also all registrations, e.g. in the mocha test scripts (-r tsconfig-paths/register). Note that we also translate paths in the output transpilate using ttsc.

I was able to remove it in nerd-marketplace as well.

[ndzik]

With our current SDK structure we cannot get rid of tsconfig-paths. This plugin is necessary for distributing our SDK with relative paths instead of the absolute ones we use referenced with a #erdstall prefix.
Removing tsconfig-paths would force us to incorporate a separate bundler like webpack which in turn just becomes another tool with its own configs to maintain and use.