docs: use placeholder for refresh token in hls-auth.http

docs: add --build to 'docker compose up' command

fix: create & use parseNumber helper to handle log level 0

docs: use more simple name for the git branch

refactor: provide more clear log messages from middleware & interceptor

refactor: set log level to debug in .env.example

refactor: do not use @nestjs/config to get logger settings

docs: add more info about new features to README.md

feat: add hls-auth.http (config for REST Client VS Code extension which can be used for testing /auth/ routes)

fix: remove useless check in error() method of LoggingService; error is the highest level and is logged in any case

refactor: move application-wide things to @core/, public decorator to @auth/

docs: add APIResponse decorator with status 401 to all protected controllers

docs: add ApiOperation OpenAPI decorators to all controllers

refactor: add readonly to several properties

refactor: cleanup logging service, add stack trace to output