[Feature] Adding support for scrollable content

[rs324]

Hi everyone,
I wanted to add the ability to scroll-x the content of the cards same as i have in my car (inspiration), this way i can stack a multiple rooms together and and scroll up and down each room.

Having scrollable content makes me feel like more native flow then clicking on multiple tabs.

How does it work ?
on column based layout add the following config:

scrollable: true max_cols: XX // its will calculate width * max cols to determine the size of scroll width: 350px // just example or it will be using the default of 300px

What if i don't want same size cols ?
just use the column_widths property.

Full config example :
`
width: 350
max_cols: 5
margin: 10px 20px;
padding: 10px
scrollable: true
max_width: 700
column_widths: 350px 700px 350px 350px

`

Inspiration :

Final result :

Thanks.