Implement CI checks

[IgorKrupenja]

We should aim to follow common patterns for CI checks for all our repos.

Acceptance criteria

• Upgrade or install the latest versions of ESlint, Prettier and Vitest dependencies.
• Since there are several packages in this repo, explore ways to re-use ESlint, Prettier and Vitest configs.
• Add a Vitest config with a simple example test.
• Dependabot is implemented as close as possible to this PR.
  • You may need to add package-lock.json to .prettierignore to avoid issues.
• ESLint should be configured as close as possible to this PR:
  • Same rule set in general.
  • All recommended Sonarcloud rules enabled.
  • Skip JS rules config from the linked sample as this repo is TS-only.
  • Add some recommended React-specific rules.
• If there are many linter issues that cannot be auto-fixed, create a follow-up task to fix these.
• Add CI checks with GitHub Actions that should be configured as close as possible to this PR.
  • Build checks should be based on npm pack if possible.
• .prettierrc should be exactly as in this PR. Re-format the codebase if necessary:

{
  "tabWidth": 2,
  "singleQuote": true,
  "printWidth": 120
}