Release/2.3.0 refactor directory structure: Clean up unnecessary files and restructure repo

[saudkhan116]

Why we create this PR?

This PR contains the following refactoring changes:

Cleaned unnecessary/unused files/directories/docs/images.

• removed environment-specific values files i.e., -dev and values-beta files from helm charts
• removed specific occurence of ArgoCD Hotelbudapest
• renamed Keycloak to IAM and removed the docker directory
• refactored workflows where necessary
• made the dpp-frontend into one directory
• made data-service as standalone service (took it out from the edc-provider)
• organized data-consumer and data-provider artifacts

What we want to achieve with this PR?

The DPP git repository structure must follow the standardised open-source project structure.

What is new?

Updated

Refactored the follwoing files:

• refactored workflows where necessary
• made the dpp-frontend into one directory
• made data-service as standalone service (took it out from the edc-provider)
• renamed Keycloak to IAM and removed the docker directory
• organized data-consumer and data-provider artifacts
• re-organized directory strcuture of docs and deployment folders

Deleted

• Deleted unused files/directories/docs/images
  • removed environment-specific values files from helm charts
  • removed specific infrastructure guide

[matbmoser]

Clarification of why there are so much changes:

We cleaned the repository of unnecessary things, also the folder structure was re-done to simplify the organization of the different components in the respository and fit with the general structure that other respositories are also folllowing like "Item Relationship Service" or "Tractus-X Connector"

No extra IP check needs to be done since all the content was already there, and just the renaming of images, and creating folders and moving documentation also is no content change just organization.