feat(stylelint-config): Implement Stylelint Common Rule set

[wakamsha]

What changed / motivation ?

Like eslint-config-moneyforward, we developed a common Stylelint rule set called @moneyforward/stylelint-config as a tool to support improving the internal development experience. This tool is related to internal technical standardization, and is expected to be incorporated into the frontend boilerplate (= starter-kit) currently under development.

Linked PR / Issues

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Chore (routine task, maintenance, or non-functional change that doesn't modify src or test files)

Pre-flight checklist

• I have read the Contributing Guidelines
• Performed a self-review of my code

References

• https://github.com/moneyforward/frontend-boilerplate/blob/main/docs/adr/0011-linter-for-css-for-web-frontend-development.md
• https://github.com/moneyforward/frontend-boilerplate/tree/main/examples/react-router-lib
• https://github.com/moneyforward/frontend-forward/blob/main/docs/ADRs/2024-12-19-re-architecture-eslint-repo-as-monorepo.md

[wakamsha]

I considered naming it stylelint-config-moneyforward, but all other Node packages use the naming convention @moneyforward/<name>, so I decided to follow that.