chore: replace biome with oxc (oxfmt + oxlint)

- Remove @biomejs/biome from root and packages/expo-two-way-audio
- Delete biome.json
- Add .oxfmtrc.json (migrated from biome via oxfmt --migrate=biome)
- Add .oxlintrc.json with curated rule set: react, react-perf,
  react-hooks, typescript, unicorn, oxc, import, promise
  - Rules target functional gotchas, untyped code, perf issues,
    deep JSX, nested ternaries, complexity, unused code
  - Noisy stylistic rules explicitly disabled
- Add npm scripts: lint, lint:fix (oxfmt replaces format/format:check)
- Update CI to run oxfmt --check

Lint is wired up but not enforced — all rules at warn. Baseline:
6040 warnings, 0 errors.

packages/expo-two-way-audio/package.json

@@ -2,6 +2,19 @@
   "name": "@getpaseo/expo-two-way-audio",
   "version": "0.1.62",
   "description": "Native module for two way audio streaming",
+  "keywords": [
+    "ExpoTwoWayAudio",
+    "expo",
+    "expo-two-way-audio",
+    "react-native"
+  ],
+  "homepage": "https://github.com/boudra/expo-two-way-audio",
+  "bugs": {
+    "url": "https://github.com/speechmatics/expo-two-way-audio/issues"
+  },
+  "license": "MIT",
+  "author": "Speechmatics <devrel@speechmatics.com> (https://github.com/speechmatics)",
+  "repository": "https://github.com/boudra/expo-two-way-audio",
   "main": "build/index.js",
   "types": "build/index.d.ts",
   "scripts": {
@@ -10,28 +23,14 @@
     "dev": "expo-module build",
     "lint": "expo-module lint",
     "test": "expo-module test",
-    "format": "biome check .",
-    "format:fix": "biome check --write .",
+    "format": "oxfmt --check .",
+    "format:fix": "oxfmt .",
     "typecheck": "tsc",
     "expo-module": "expo-module",
     "open:ios": "xed examples/basic-usage/ios",
     "open:android": "open -a \"Android Studio\" examples/basic-usage/android"
   },
-  "keywords": [
-    "react-native",
-    "expo",
-    "expo-two-way-audio",
-    "ExpoTwoWayAudio"
-  ],
-  "repository": "https://github.com/boudra/expo-two-way-audio",
-  "bugs": {
-    "url": "https://github.com/speechmatics/expo-two-way-audio/issues"
-  },
-  "author": "Speechmatics <devrel@speechmatics.com> (https://github.com/speechmatics)",
-  "license": "MIT",
-  "homepage": "https://github.com/boudra/expo-two-way-audio",
   "devDependencies": {
-    "@biomejs/biome": "1.9.4",
     "@types/react": "^18.0.25",
     "expo-module-scripts": "^3.5.2",
     "expo-modules-core": "^2.0.4"