[Features] Block & Layout additional features

[mstfkhazaal]

1- Add search with Icon or Image to Block Select List

2- Can put Block Global or for specific layout
Example (Blog Templates,Comment Section, Author ) For BlogLayout and Question FAQ Blocks for FAQLayout ...

[Z3d0X]

1. Fabricator is just using the "Builder" from Filament, please make this suggestion on the filament repo

2. It is possible using ->hidden() or ->visible() on the "block", along with https://filamentphp.com/docs/2.x/forms/fields#using-get-to-access-parent-field-values