We move all of the event tile rendering into a factory manager for a couple reasons:
1. `EventTile` is uncomfortably large for a file
2. A simple map isn't possible anymore (can't convert the existing maps like `eventTileTypes` to `Record<string, typeof React.Component>` because the types are actually incompatible)
So, by having a factory manager place we can more easily render components without having to use `getComponent()` all over the place, and without lying to ourselves about how simple the event rendering path is.
This change also moves quite a bit of the rendering path into the new `EventTileFactory` file so it can be easily seen by future developers.
* Move all polls processing to events-sdk
This makes polls support the full range of extensible events (both parsing and generation).
* Appease the linter
* Fix & update tests
* Update events-sdk for polls bugfix
* Update events-sdk for typechecking
* Add missing type cast
* Update per review
Adds maplibre as a dependency, and behind a labs flag, lets users send and receive [MSC3488](https://github.com/matrix-org/matrix-doc/blob/matthew/location/proposals/3488-location.md) style location shares - with backwards compatibility with old school `m.location` `msgtype` location shares too.
For this to work, you have to define a valid maptile server and API in your config.json's `map_style_url`.
* Display started polls in timeline (without votes)
* Update i18n info
* Keep original background colour of poll options, even on hover
* Show full avatar above a poll message
