feat(error_handling): add global error handling middleware

fix(setup): add support for local 'dotnet run' command

fix(readme): add pgadmin variables to readme

feat(pgadmin): add pgadmin container

fix(docker) Alter image for postgress docker container

feat(readme): add readme

chore(gitignore) Untrack visual studio files

feat(migration): add migration scripts

Add README with anonymized credentials

feat(users): add basic user endpoint with working db

fix(readme): move readme to root

feat(db): add postgresql container, readme for environments, env

feat(docker): add dockerfile for backend and docker-compose

chore(structure): move backend to backend dir

chore(Features): add features dir