feature: add missing string/number validations

[catsalive]

• String validation checks added: minLength, maxLength, pattern
• Number validation checks added: exclusiveMinimum, exclusiveMaximum, multipleOf
• Added tests
• Updated the examples to include one of each of the above settings
• Other:
  • Fixed the README link for running examples (let me know if it should include v1 too?)
  • Updated the Expect type in check.ts to include some other missing properties
  • The pnpm lockfile got updated, I am using pnpm@7, but it looks like it updated the lockfileVersion

Let me know on anything you want me to revert!