share webpack typescript config with docker container

[lukeromanowicz]

Short description and why it's useful

Current typescript config for webpack building is not shared with docker containers which causes being unable to build with webpack config written TS.

Screenshots of visual changes before/after (if there are any)

Upgrade Notes and Changelog

• No upgrade steps required (100% backward compatibility)
• I've updated the Upgrade notes and Changelog on how to port existing VS sites with this new feature

Contribution and currently important rules acceptance

• I read and followed contribution rules
• I read the TypeScript Action Plan and adjusted my PR according to it
• I read about Vue Storefront Modules and I am aware that every new feature should be a module