chore(release): 0.6.0

Android native video renders a picture, and its transport works.

The path shipped once as audio with no picture and was reverted with the
compositing named as the suspect. It was not the compositing: five independent
defects sat between ExoPlayer and the screen, each able to produce that symptom
on its own — the app shell painting over the surface through a CSS rule aimed at
an attribute nothing set, a poster card with no way to lift on a path that
renders no <video>, JS bridges racing the page load and losing permanently, a
SurfaceView that was never detached, and a frontend that told Rust a webview
element was playing when none existed, so every play/pause intent was aimed at
something that was not there.

Native video stays opt-in. Turning it on surfaced a further unverified path —
the background-audio return is written only for the webview element — and
rotation still needs device confirmation.

Minor rather than patch: the player's touch behaviour changes for everyone (the
control bar now auto-hides on touchscreens, and the system bars go away with the
player), not only for those who opt into native video.

src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "jellytau",
-  "version": "0.5.5",
+  "version": "0.6.0",
   "identifier": "com.dtourolle.jellytau",
   "build": {
     "beforeDevCommand": "bun run dev",