Making validator usable as a standalone package

With this release, we pull @adonisjs/validator out of the core and do not recommend it for v6 apps. v6 apps should use VineJS.

However, existing apps migrating to v6 can install this package and continue using it.

Commits.

• chore: publish providers folder ee4eaf2
• feat: make adonisjs/validator to be usable directly 7a53283
• chore: add engines to package.json file 1411721
• chore: do not publish source files 5eed18d
• chore: use @adonisjs/tooling presets for tooling config a0b2318
• chore: upgrade japa to v3 4c34266
• chore: update dependencies 623d90a

Full Changelog: v13.0.2-2...v13.0.2-3