Allow option to load bank files from Android jar assets

When running in Unity on Android, FMOD will attempt to detect whether it is running inside an .apk and update its bank paths to look inside file:///android_asset.

If an .apk is not detected, FMOD will instead look for the bank files in the compiled .jar assets.

There are some scenarios where it is necessary to explicitly control this behaviour in order for the bank files to load correctly (see

Could an optional flag be added to RuntimeManager.LoadBank or similar, that lets us explicitly state how or where each bank is loaded?

That does sound like something that could be useful, I will raise a task to investigate if and how we might be able to add something like this.