jsonschema: Add support for mentioning minItems and maxItems if repeated validation present

[gauravojha]

If the field is a repeated field, it allows to add validations on minItems and maxItems. There is a json schema support to mention this in the generated schema for the type array.

Currently, when the jsonschema is generated, it doesn't mention the minItems and maxItems for the array. Adding this support would really be helpful as when we generate a json schema for a repeated field, the schema will mention any item constraints for the array.

https://tour.json-schema.org/content/04-Arrays/01-Specifying-Length-of-an-Array

https://www.learnjsonschema.com/2020-12/validation/minitems/
https://www.learnjsonschema.com/2020-12/validation/maxitems/