BWF Analyser: browser page and macOS app

Reads and edits BWF metadata for production sound. One source tree builds a
single self-contained page and a native Tauri app with a Rust audio engine and
WAV writer. Around 370 checks across seven test suites.

First commit of the existing state, so that from here every change can be
seen and undone.

mac-app/src-tauri/tauri.conf.json

@@ -0,0 +1,47 @@
+{
+  "$schema": "https://schema.tauri.app/config/2",
+  "productName": "BWF Analyser",
+  "version": "1.5.1",
+  "identifier": "com.vincentrozenberg.bwf-analyser",
+  "build": {
+    "frontendDist": "../dist"
+  },
+  "app": {
+    "withGlobalTauri": true,
+    "windows": [
+      {
+        "label": "main",
+        "title": "BWF Analyser",
+        "width": 1360,
+        "height": 900,
+        "minWidth": 1040,
+        "minHeight": 560,
+        "resizable": true,
+        "dragDropEnabled": true,
+        "hiddenTitle": true
+      }
+    ],
+    "security": {
+      "csp": null
+    }
+  },
+  "bundle": {
+    "active": true,
+    "targets": [
+      "app"
+    ],
+    "category": "public.app-category.music",
+    "copyright": "MIT licensed",
+    "shortDescription": "Broadcast Wave metadata analyser",
+    "longDescription": "Reads scene, take, timecode and iXML metadata from a folder of BWF/WAV recordings, and writes edits back to the original files. Everything stays on this machine.",
+    "icon": [
+      "icons/32x32.png",
+      "icons/128x128.png",
+      "icons/128x128@2x.png",
+      "icons/icon.icns"
+    ],
+    "macOS": {
+      "minimumSystemVersion": "10.15"
+    }
+  }
+}