Allows [VoiceMessagePresenter] instances to keep their progress and download states while going in and out of the timeline viewport.
This is implemented by caching each instance of a TimelineItem presenter inside the RoomScope. TimelineItem presenters can move some of their state outside of the `present()` function so that such state will survive scrollings of the timeline.
Changes recording button behaviour so that
- tapping the record button starts a recording and displays the stop button
- tapping the stop button stops the recording
- tapping the delete button cancels the recording
- 'hold to record' tooltip is removed
---------
Co-authored-by: ElementBot <benoitm+elementbot@element.io>
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## Type of change
- [ ] Feature
- [x] Bugfix
- [ ] Technical
- [ ] Other :
## Content
`RustMediaLoader` creates the "${cacheDir}/temp/media" dir only once at class creation. Unfortunately when clearing an app's cache this directory will be deleted and the app's process won't be killed, so subsequent usages of the same instance of `RustMediaLoader` will not work because `cacheDirectory` does not exists. This fix makes sure that such directory is always checked and created if needed.
## Motivation and context
Fixes https://github.com/vector-im/element-x-android/issues/1788
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## Checklist
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- [ ] Changes have been tested on an Android device or Android emulator with API 23
- [ ] UI change has been tested on both light and dark themes
- [ ] Accessibility has been taken into account. See https://github.com/vector-im/element-x-android/blob/develop/CONTRIBUTING.md#accessibility
- [ ] Pull request is based on the develop branch
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