…ion (#590)

This PR migrates the linting setup from ESLint to oxlint, extending from
the `@eggjs/oxlint-config` configuration package while maintaining
backward compatibility.

## Changes Made

- **Removed dependencies**: `eslint` and `eslint-config-egg`
- **Added dependencies**: `oxlint` and `@eggjs/oxlint-config`
- **Updated lint script**: Changed from `eslint src test --ext .ts
--cache` to `oxlint src test`
- **Extended configuration**: Added `.oxlintrc.json` that extends from
`@eggjs/oxlint-config` with selective rule overrides to maintain
compatibility
- **Auto-fixed code**: Applied oxlint's auto-fixes for code style
improvements

## Configuration Approach

The new `.oxlintrc.json` extends from `@eggjs/oxlint-config` as the base
configuration but selectively disables additional rules to preserve the
original linting behavior. This approach:

- Inherits the comprehensive EggJS oxlint configuration structure
- Maintains the same 2 warnings as the original ESLint setup
(`no-extend-native` rule)
- Provides a foundation for future rule adoption when the codebase is
ready

## Performance Benefits

- **Significantly faster**: Linting now completes in ~21ms vs previous
longer execution times
- **Smaller dependency footprint**: Removed 140+ npm packages from the
dependency tree
- **Maintained compatibility**: Produces the same 2 warnings as the
original ESLint setup

## Before vs After

**Before (ESLint)**:
```bash
❯ eslint src test --ext .ts --cache
/home/runner/work/urllib/urllib/src/utils.ts
  247:5  warning  String prototype is read only, properties should not be added  no-extend-native
  259:5  warning  String prototype is read only, properties should not be added  no-extend-native

✖ 2 problems (0 errors, 2 warnings)
```

**After (oxlint with @eggjs/oxlint-config)**:
```bash
❯ oxlint src test
  ⚠ eslint(no-extend-native): String prototype is read-only, properties should not be added.
     ╭─[src/utils.ts:247:5]

  ⚠ eslint(no-extend-native): String prototype is read-only, properties should not be added.
     ╭─[src/utils.ts:259:5]

Found 2 warnings and 0 errors.
Finished in 21ms on 66 files using 4 threads.
```

The migration successfully uses the official EggJS oxlint configuration
while maintaining the same linting behavior for backward compatibility.

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[skip ci]

## <small>4.8.2 (2025-08-12)</small>

* fix: enumerable WellFormed ([0b1e89d](0b1e89d))
* chore: ignore pnpm-lock.yaml ([3cc8971](3cc8971))
* chore: migrate from ESLint to oxlint with @eggjs/oxlint-config extension (#590) ([1ae3fd7](1ae3fd7)), closes [#590](#590)
* chore: typo fix on release task name ([54aa22a](54aa22a))