De-duplicate assets on Android

[BenjaminAmos]

Description

This pull request contains the corresponding engine changes for the Android pull request MovingBlocks/DestSolAndroid#22. See that pull request for a description of the build system changes.

The engine changes are as follows:

• Changed the output path for the engine module reflections cache to make it easier to symlink
• Reduced the classes included in reflection caches in general, leading to an overall module size reduction
• Updated gestalt to the latest release.
• Updated AndroidOggMusicFileFormat and AndroidOggSoundFormat to use a new method for reading files that eliminates the need to copy them onto the filesystem on Android. This method requires the music and sound files to be present in a directory module directly in the Android assets directory instead of in a jar, which the Android build scripts

Testing

• Android should still work the same as before with these changes. The APK file sizes should be considerably smaller though.
• As a comparison, the v2.0.0 APK (with duplicated assets) is approximately 121MB. This is for the base game only, with no additional modules.
• With these changes, the APK size is approximately 107MB (base game only).

Notes

• This depends on MovingBlocks/DestSolAndroid#22
• Breaking changes in the latest gestalt (7.x) release mean that this will likely break existing ECS pull requests. The Component#copy method has been renamed to Component#copyFrom.
• With these changes, it is no longer possible to use archive modules (jar/zip modules) on Android. For a from-source workspace though, there should be no functional difference.