[Suggestion] Material Editor Improvements

[Myterian]

These improvements are purely based on my experince after working with substance designer, amplify shader editor and blender and creating some materials with flax.

• [x] By far the biggest improvement is still reorderable parameters, but this is detailed here: #1781

• [ ] Local Variables This helps to improve shader node management, by allowing to store values in a variable and then getting those variables in other parts of the material editor. So you don't have to deal with long connections, especially in bigger or more complex materials. (Reference from Amplify Shader Editor)

• [ ] Hdr Color Property Simply the ability to have Colors with build in intensity, like unity provides. This can greatly help i.e. with emission colors. Current workaround is this.

• [ ] Small texture slots This is purely from a design perspective, but it would be nice to have the ability to make the texture parameter smaller. This is to improve readyabilty when working with material instances, by having parameter names bundled together. So currently it looks like this: but it could look like this

• [x] Noodles This is personal taste, but I would like to have the option to make the noodles straight instead of curved, like blender allows you to do via the noodle curving setting.

[Chikinsupu]

I have a couple of these things already on my list. So they will eventually be implemented. That of course doesn't mean that i block anyone to implement these things before me. ^^

[Menotdan]

For the third point, you can actually just set the "V" parameter in the HSV section of the color value higher than 100%. That's how I handle higher intensity at least.

[Myterian]

Ah, good to know. But maybe this could be made more obvious, as those color pickers usually don't support going higher than 100%