Add Oxlint configuration with Project Wallace preset (#176)

## Summary
This PR adds Oxlint configuration to the project using the Project
Wallace preset for consistent linting standards.

## Changes
- Added `.oxlintrc.json` configuration file that extends the
`@projectwallace/preset-oxlint` preset
- Added `@projectwallace/preset-oxlint` (v0.0.7) as a dev dependency

## Details
The new Oxlint configuration leverages a shared preset from Project
Wallace, which provides a standardized set of linting rules for the
project. This ensures consistent code quality checks across the codebase
without needing to manually define individual lint rules.

https://claude.ai/code/session_01QEnYnY4Fcs2DWajYxNPSvF

Co-authored-by: Claude <noreply@anthropic.com>

Author: bartveneman

.oxlintrc.json

@@ -0,0 +1,3 @@
+{
+	"extends": ["@projectwallace/preset-oxlint"]
+}

package-lock.json

@@ -45,6 +45,7 @@
 	},
 	"devDependencies": {
 		"@codecov/rollup-plugin": "^1.9.1",
+		"@projectwallace/preset-oxlint": "^0.0.7",
 		"@types/node": "^25.5.0",
 		"@vitest/coverage-v8": "^4.0.3",
 		"oxfmt": "^0.41.0",