chore: add typescript configuration files to scripts directory

[sgaczol]

Description

Adding tsconfig.json and .eslintrc.js to scripts directory is necessary in order for the new script, introduced in #4087, to work properly.

Changes

• add tsconfig.json and .eslintrc.js to scripts directory

Before & after - visual documentation

N/A

Test plan

N/A

Checklist

• Included code example that can be used to test this change.
• For visual changes, included screenshots / GIFs / recordings documenting the change.
• For API changes, updated relevant public types.
• Ensured that CI passes

[Copilot]

Pull request overview

Adds TypeScript and ESLint configuration files under scripts/ to support running/linting TypeScript-based utility scripts from that directory (notably the checklist-generation script referenced in #4087).

Changes:

• Add scripts/tsconfig.json extending the repo tsconfig.json and defining path aliases for script compilation.
• Add scripts/.eslintrc.js to provide an ESLint root config for files under scripts/.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
scripts/tsconfig.json	Adds a scripts-local tsconfig with paths mappings for module resolution.
scripts/.eslintrc.js	Adds a scripts-local ESLint root configuration.

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[kkafar]

LGTM