RESTful platform - UI Support

[neyzm]

Describe your core improvement

It would be great if we could finally setup all RESTful integrations via the UI, rather that solely relying on yaml.
The sensors can possibly be created via the Helper UI to make things much easier for the end user.

Integrations:
RESTful
RESTful Sensor
RESTful Binary Sensor
RESTful Command

Current limitations

Currently, the only way to configure RESTful is to use yaml.

Technical benefits

Easier setup & configuration without having to tinker with yaml.

Additional context

As this FR covers multiple areas, feel free to move it to a more fitting category.

[flippy1345]

Especially the need to restart home-assistant due to changes in the .yaml makes debugging and overall creating restful actions very cumbersome

[Zncon]

I'd like to pile on here as well. APIs with limited responses per hour/day are extra annoying, since each reboot and test will run a new query and eat up the limit. Being able to set these up in the UI would help with this.

[Drexl]

Agreed, would love to see this.

[iluvdata]

Hi all,

I'm thinking about taking on this task. Anything you'd like to see in particular?