refactor(ui5-option): make options physical elements

[dobrinyonkov]

Removes the ui5-select-menu and ui5-select-menu-option components.

BREAKING CHANGE: The ui5-select-menu and ui5-select-menu-option components are removed. Custom options can now be created using the ui5-option-custom, directly placed inside the default slot of the ui5-select

SelectMenu & SelectMenuOption

Changed item	Old	New
SelectMenu	ui5-select-menu	removed
SelectMenuOption	ui5-select-menu-option	ui5-option-custom

If you have previously used the ui5-select-menu and ui5-select-menu-option:

<ui5-select menu="selectMenu"></ui5-select>

<ui5-select-menu id="selectMenu">
    <ui5-select-menu-option>
        <div class="optionContent">custom</div>
    </ui5-select-menu-option>
</ui5-select-menu>

Now use just ui5-select and ui5-option-custom instead:

<ui5-select>
    <ui5-option-custom>
        <div class="optionContent">custom</div>
    </ui5-option-custom>
</ui5-select>

Select

Changed item	Old	New
property	menu	removed

The menu property of the ui5-select is removed.

Related to #8461, #7887

[nnaydenow]

IOption seems to be redundant since we have OptionBase class

[dobrinyonkov]

I removed the IOption interface here, but we might still need something for the Select.ts file. There we are using the icon property of the Option which is missing in the OptionBase and as well as some other fields in the SelectPopover.hbs as additionalText, isCustom getter. IOption interface there combines all the stuff the select needs from both the custom option and the option.

[nnaydenow]

Minor changes, otherwise it looks and works good to me.

[nnaydenow]

• Add notes for additionalTextState, description, iconEnd, image, movable, accessibleName, deleteButton, imageContent. Also documentaiton of selected should be adjusted. Same apply for the OptionCustom class and for some of the parts.

test