Make Angular Directives Standalone

[Sinan997]

Todo

• Directives should be standalone for the future.
• Currently, most of our basic directives are exporting via core module. If anyone wants to use any of these directives he/she has to be import core module(other unwant stuff will be imported) in standalone components.
• So, it is better to make them and mark them standalone.
• We still going to import it in core module. You can still use it as it is. It wont be breaking change.
• But in the future we will remove it from core module import's [EDITED BY @masumulu28]