Ushcode/1247/Use-pnpm-in-twa-vf

5.4.0

Viz app can now be secured behind a Keycloak authentication server by configuring some environment variables. See main documentation of the project 1.1
Dependency management and build process optimised by using pnpm over npm for the project.
Docker build optimised with multi stage building and module caching
Rebuild should only occur if a change in a config file is detected
Some dependency updating and trimming down
NB there no longer two places to mount config files and media. All config files should go in web/twa-vis-platform/code/public and NOT web/twa-vis-platform/uploads