feat: Add DirectAudio driver support

[joshuatam]

Description

Introduces DirectAudio as a new audio driver option for Wine.

This driver provides direct audio output to Android's AAudio, bypassing PulseAudio or ALSA middleware, potentially improving audio latency and compatibility for users.

Thanks for the interesting work from @The412Banner
https://github.com/The412Banner/directaudio

Recording

N/A

Type of Change

• Bug fix
• Performance / stability improvement
• Compatibility improvements
• Other (requires prior approval)

Checklist

• If I have access to #code-changes, I have discussed this change there and it has been green-lighted. If I do not have access, I have still provided clear context in this PR. If I skip both, I accept that this change may face delays in review, may not be reviewed at all, or may be closed.
• This change aligns with the current project scope (core functionality, stability, or performance). If not, it has been explicitly approved beforehand.
• I have attached a recording of the change.
• I have read and agree to the contribution guidelines in CONTRIBUTING.md.

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Summary by cubic

Adds DirectAudio as a new Wine audio driver on Android, routing audio via AAudio to reduce latency by bypassing PulseAudio/ALSA. Previously only ALSA/PulseAudio were supported; now Proton 11 arm64ec (Bionic) users can select DirectAudio, with automatic fallback to PulseAudio when unsupported or when Wine/variant changes.

• UI: Adds “DirectAudio (Proton 11 arm64ec only)” to audio settings; validates selection against Wine version and variant; keeps the dropdown synced with config changes.
• Runtime: Writes Software\Wine\Drivers:Audio=directaudio. When a container uses DirectAudio, ContainerManager.extractDirectAudio installs winedirectaudio.drv and winedirectaudio.so into Wine (lib/wine/aarch64-{windows,unix}) and copies the .drv to the prefix system32. XServerScreen.refreshComponentsFiles now triggers extraction for DirectAudio containers.
• Assets: Bundles DirectAudio v1.2.1 (directaudio-20260813.tzst) plus a diagnostics build (directaudio-20260813-diagnostics.tzst); defaults via DIRECTAUDIO_ASSET. v1.2.1 includes fixes for a MIDI notify CPU spin and background/foreground audio stalls.
• Legal: Updates THIRD_PARTY_NOTICES for DirectAudio (LGPL-2.1-or-later).

Rollout

• Proton 11 arm64ec (Bionic) users can select “DirectAudio”; the driver installs automatically. Others continue on PulseAudio.
• To trace issues, set DIRECTAUDIO_ASSET to directaudio-20260813-diagnostics.tzst for additional logcat probes.

^{Written for commit 600958b. Summary will update on new commits.}

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