…ts general functionalities with regular form, and improve the user experience. This change includes: A right sidebar, to have better access to the form fields of different parts of the instance A left sidebar, from which we can drag and drop embedded entities and existing Inter-Service Relations from the inventory. Inter-Service Relations can only be edited when opened individualy in the Instance Composer. Zooming can now be done with a slider, and two new functionalities have been added. Zoom-to-fit and full-screen mode. (Issue #5868, PR #5985)

# Description

Pull request that merge all changes made to the instance composer to move away from old design and functionalities and make composer to follow form-like behaviour

Task that are still required for full redesign:

#5870 #5986 #5987 #5988 #5989  #5990 #5991

https://github.com/user-attachments/assets/12001341-4bb4-43dc-af3b-88c78993ebe4

closes #5868

# Self Check:

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- [ ] Attached issue to pull request
- [ ] Changelog entry
- [ ] Code is clear and sufficiently documented
- [ ] Sufficient test cases (reproduces the bug/tests the requested feature)
- [ ] Correct, in line with design
- [ ] End user documentation is included or an issue is created for end-user documentation (add ref to issue here: )