[#877] Format and lint CustomMaterial module

[aamirxshaikh]

Purpose

Applying UI linting and formatting to the CustomMaterial module. Removing the CustomMaterial module from ui/.eslintignore and ui/.prettierignore and fixing formatting.

[bossenti]

Do we want to rename the module to custom-material @tenthe @dominikriemer? Would be consistent with the other module names

[tenthe]

Yes, I think that is a good idea.
We should also discuss if we still need this module. We should address the question whether it is good practice to make all dependencies into one module which is then imported by all others or if it is better to import the material modules directly.

[bossenti]

👍🏼
But that's a follow-up topic right? 🙂

[tenthe]

Yes, that is a follow up topic