feat: add NeDropdownFilter component

[andre8244]

Add NeDropdownFilter component.

With checkbox options:

With radio options:

With checkbox options (dark theme):

With radio options (dark theme):

[Tbaile]

Even with this, changes, it appears that there are a few violations in HTML standard (I.E. divs inside label elements), will look into how to raise these warnings with eslint

[andre8244]

Even with this, changes, it appears that there are a few violations in HTML standard (I.E. divs inside label elements), will look into how to raise these warnings with eslint

Good catch