feat(api): [KDL6-295] rename project roles

[igzjaviergil]

Motivation and Context

The same role names are used for KDL and for projects, but roles are different in each case and can be confusing.

Rename project roles to a different name:
ADMIN → OWNER
MANAGER → DEVELOPER
VIEWER → MEMBER

PR Checklist

Please check if your PR fulfills the following requirements:

• I have created tests for my code changes, and the tests are passing.
• I have executed the pre-commit hooks locally.
• I have updated the documentation accordingly.
• The commit message follows our guidelines: https://github.com/konstellation-io/kdl-server/blob/main/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• My change requires a change to the documentation (create a new issue if the documentation has not been updated).

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

Closes #

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information