Added M3 functionality for User Management, added Keycloak security

Closes #15

See merge request !38

feat: finished keycloak configuration, added .env variables, modified readme to explain how it works, finished tests to work with keycloak

feat: duplicate dependencies moved to parent pom.xml

See merge request !36

M2 add data M1 missing requirements

See merge request !29

added docker files and docker compose

See merge request !35

Unify service properties

See merge request !34

Remove recommendations interfaces

See merge request !33

#20 m2 requirements movie management

See merge request !28

Implemented Milestone2 Functionality for User Management

See merge request !27

Fix maven caching in CI

See merge request !30

unified swagger gen, swagger url and file name

See merge request !32

fix: fixed the pipeline, removed pmd and modifed checkstyle

See merge request !31

Each service runs on unique port

Closes #19

See merge request !26

Add maven caching to CI

See merge request !25

Remove empty editor config

See merge request !24