New features: builder mode (like the builder mode of Prometheus).
The builder mode supports rendering load configuration pages through the response of the server.
#321
example:

Hello, thank you for the contribution.
That's a lot of code so will take some time to review in few rounds.
For the change points you mentioned, do you directly modify them or do I resubmit them after modification?
Yes, I'd expect you implement requested changes first (standard github review process 🤔).
I'm willing to do final touches and nitpicking on this PR.
Sorry for late response, I have some work to do now. I'll take over from now, thanks for contribution!
We will need to also modify Openapi
I'm a little busy this weekend. I will update the openapi.yaml file next week.
Thank you for the contribution!
I'll test it in my project and then do a release.