chore: add oxfmt tooling

Adds the oxfmt formatter (devDep + .oxfmtrc.json), `format` /
`format:check` scripts, and wires `oxfmt --write` into lint-staged so
new commits stay formatted. The CI format-check job and the actual
reformat are added in follow-up commits.

Author: B4nan

.oxfmtrc.json

@@ -0,0 +1,16 @@
+{
+    "tabWidth": 4,
+    "singleQuote": true,
+    "trailingComma": "all",
+    "printWidth": 120,
+    "ignorePatterns": [
+        "**/*.md",
+        "**/*.json",
+        "**/*.jsonc",
+        "**/*.yaml",
+        "**/*.yml",
+        "**/node_modules",
+        "**/dist",
+        "coverage"
+    ]
+}

package.json

@@ -33,6 +33,8 @@
         "release": "pnpm build && lerna version patch && lerna publish from-package --contents dist",
         "lint": "oxlint --type-aware",
         "lint:fix": "oxlint --type-aware --fix",
+        "format": "oxfmt",
+        "format:check": "oxfmt --check",
         "preinstall": "npx only-allow pnpm"
     },
     "commitlint": {
@@ -42,6 +44,7 @@
     },
     "lint-staged": {
         "*.ts": [
+            "oxfmt --write --no-error-on-unmatched-pattern",
             "oxlint --type-aware --fix --no-error-on-unmatched-pattern"
         ]
     },
@@ -60,6 +63,7 @@
         "lerna": "^9.0.6",
         "lint-staged": "^16.0.0",
         "nock": "^14.0.0",
+        "oxfmt": "0.46.0",
         "oxlint": "1.62.0",
         "oxlint-tsgolint": "0.22.0",
         "rimraf": "^6.0.1",