Add media file limit size warning and media quality selection (#5131)

* Add `VideoCompressorPreset` enum

This represents the different compression presets used for processing videos before uploading them

* Add `VideoCompressorHelper` util class to calculate the scaled output size of the video given an input size and its optimal bitrate

Also add `MediaOptimizationConfig` which will be used to decide how to apply compression in `MediaPreProcessor`

* Add `RustMatrixClient.getMaxFileUploadSize()` function and `MaxUploadSizeProvider` so we can import only this functionality into other components

* Try preloading the max file upload size the first time we get network connectivity - it's a best effort

This should help ensure we'll have this value available later, even if we still need to load it asynchronously.

* Split the `compressMedia` preference into `compressImages` and `compressMediaPreset`

* Modify the media processing parts to use the new classes and utils

* Add `MediaOptimizationSelectorPresenter`, which will retrieve the compression values and the max file upload size, also estimating the compressed video file sizes if needed.

* Add a feature flag to allow selecting the media upload quality per upload

* Integrate the previous changes with the attachments preview screen

Add strings from localazy too.

* Adapt the rest of the app calls to upload media to using the media optimization configs

* Allow modifying the default compression values in advanced settings, based on the feature flag value

* Pass the `fileSize` in `MediaUploadInfo` too, to be able to check it against the `maxUploadSize`

* Update screenshots

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Co-authored-by: ElementBot <android@element.io>

libraries/featureflag/api/src/main/kotlin/io/element/android/libraries/featureflag/api/FeatureFlags.kt

@@ -184,4 +184,12 @@ enum class FeatureFlags(
         // False so it's displayed in the developer options screen
         isFinished = false,
     ),
+    SelectableMediaQuality(
+        key = "feature.selectable_media_quality",
+        title = "Select media quality per upload",
+        description = "You can select the media quality for each attachment you upload.",
+        defaultValue = { false },
+        // False so it's displayed in the developer options screen
+        isFinished = false,
+    ),
 }