new rule: pascalCaseClassNames

[jpike88]

Description

Class names usually adopt the pascal case convention for readability, and standing them out from variables, functions.

This would be invalid:

class thisIsAClass { }

This would be valid:

class ThisIsAClass { }

[unvalley]

I'll work on this.

[ematipico]

Actually, there's an interesting proposal from @Conaclos #4282 I really like.

@jpike88 when you have an idea, please use GitHub discussions instead. We use issues for bugs, technical tasks and tracking tasks are already planned/discussed.

@unvalley please hold off on this one, I'd suggest check umbrella issues around ESLint compatibility, accessibility or react

[jpike88]

closing in favor of #4282