Feature(base-table): improve table components

[mateuszRybczonek]

This PR adds support for:

• Hover effect on row item

BaseTableRowItem component accepts a new property now:

    isHoverable: {
        type: Boolean,
        default: false
    },

and emits hover event when isHoverable is true and user hovers over the component

• Description in the header item

header prop can include description property now that if provided adds a description to the header