fix: resolve ESM imports from hoisted dependencies

[zombieJ]

Summary

• resolve candidate ESM modules with Node's normal lookup rules instead of assuming they live in the current package's node_modules
• support hoisted and workspace dependencies while preserving the existing behavior for standalone repositories
• keep /lib/ imports unchanged when no matching ESM module is available
• add Node test coverage and run it in CI and before publishing

Context

This fixes the module lookup failure behind ant-design/ant-design-icons#760. In that monorepo, Father runs from packages/icons-react, while @ant-design/icons-svg is hoisted to the repository root. The previous filesystem check therefore missed the existing ESM build and left CommonJS imports in the React ESM output.

Once this plugin is released and adopted, the local alias workaround in ant-design/ant-design-icons#768 can be removed.

Related to #4.

Verification

• npm run build
• npm test — 3/3 passed
• npm run lint
• father doctor
• verified the built plugin rewrites the real hoisted @ant-design/icons-svg/lib/asn/SmileOutlined import to @ant-design/icons-svg/es/asn/SmileOutlined
• Prettier and git diff --check

[coderabbitai]

Important

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Run ID: 740a6dfd-a9a7-423e-b405-a10a5c80bb58

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