Refactor tooltip component

Not sure who to assign this to... it might actually make for a good onboarding task... but assining to @MendyBerger for now with the triage label.

The tooltip components (on the rust/dominator side, as opposed to elements) were written a while ago and were kindof a band-aid solution until we had a better overlay system. Additionally, some of the coding conventions are outdated as it was written before we settled on a better style.

These components are not used everywhere.. for example, the header jiggling tooltips are completely on the element side and do not depend on these components. However, the in-module tooltips do.

Off the top of my head, here's a rough checklist of what should be done:

• rename State to Tooltip (or TooltipState)
• impl the render methods on the struct, instead of the naked functions
• struct should accept self: Rc<Self> (note: this is a new styleguide change... will discuss with @MendyBerger )
• new method to render via OverlayHandle::lifecycle() (must still support current methods, e.g. mixin too)
• replace everywhere it's used with this new method
• the OverlayDom layer in card modules probably won`t be needed anymore... if so, get rid of it
• the Overlay and OverlayExt in all modules probably wont be needed anymore, and it's currently confusing in terms of how that will order with the OverlayContainer` in the abstraction layer. If it's possible, git rid of it (in the Base/modules, not the generic layer)
• note: the overlay slot in the module pages is still needed and is where the container is rendered to in the generic layer. don't remove that!