Dropdowns v2 (tgstation#75164)

## About The Pull Request

Complete rewrite of dropdowns to use popper elements that are injected
at the body level.
This means they are now horribly overcomplicated and also suck a lot
less

![2023-05-04_06-57-12](https://user-images.githubusercontent.com/5194834/236229806-2f676e7b-d6c5-427a-af2f-520d883be790.gif)
Also ported `Icon` to typescript for a reason that didn't end up making
it in the PR

## Why It's Good For The Game

![image](https://user-images.githubusercontent.com/5194834/236226086-35ec2009-e9a9-404b-9b52-3ab8de0a0ae6.png)

![image](https://user-images.githubusercontent.com/5194834/236226573-880c0380-0f70-41c7-90c6-d51ba4238561.png)

## Changelog
:cl:
add: good tgui dropdowns
del: tgui dropdown suck
qol: tgui dropdowns suck less
balance: buffed tgui dropdowns
/:cl:

tgui/docs/component-reference.md

@@ -363,15 +363,14 @@ and displays selected entry.
 
 - See inherited props: [Box](#box)
 - See inherited props: [Icon](#icon)
-- `options: string[]` - An array of strings which will be displayed in the
-dropdown when open
-- `selected: string` - Currently selected entry
-- `width: number` - Width of dropdown button and resulting menu
+- `options: string[] | DropdownEntry[]` - An array of strings which will be displayed in the
+dropdown when open. See Dropdown.tsx for more adcanced usage with DropdownEntry
+- `selected: any` - Currently selected entry
+- `width: string` - Width of dropdown button and resulting menu; css width value
 - `over: boolean` - Dropdown renders over instead of below
 - `color: string` - Color of dropdown button
 - `nochevron: boolean` - Whether or not the arrow on the right hand side of the dropdown button is visible
-- `noscroll: boolean` - Whether or not the dropdown menu should have a scroll bar
-- `displayText: string` - Text to always display in place of the selected text
+- `displayText: string | number | InfernoNode` - Text to always display in place of the selected text
 - `onClick: (e) => void` - Called when dropdown button is clicked
 - `onSelected: (value) => void` - Called when a value is picked from the list, `value` is the value that was picked