JS2: Task1:
Create a module for working to work with DOM. The module should have the following functionality
Add element to parent element by given selector
Remove element from the DOM  by given selector
Attach event to given selector by given event type and event hander
Add elements to buffer, which appends them to the DOM when their for some selector count becomes 100
The buffer contains elements for each selector it gets
Get elements by CSS selector
The module should reveal only the methods