Fixes Ajv 8 breaking changes, adds additional editor enhancements

[crimson-cata1yst]

Summary

• Fixes broken validation caused from the upgrade to Ajv 8+ in ngx-ui 47.0.0

• Adds extra optional inputs on the json editor/flat editor to allow apps to pass in their own options, formats, and keywords to the validator service.

• Ajv handles strict schemas in line with JTD now; initialized strict to 'true' on new Ajv instantiations, but it can be overrode with the optional options input.

• Resolves #1037

Nothing remarkable with the screenshot - just showing that validation works again

Checklist

• [x] *Added unit tests
• [ ] *Added a code reviewer
• [x] Added changes to /projects/swimlane/ngx-ui/CHANGELOG.md under HEAD (Unreleased)
• [x] Updated the demo page
• [x] Included screenshots of visual changes

*required

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[crimson-cata1yst]

Could I get a review of this please? This is a critical blocker for my team to finish upgrading to Angular 17+, it would much appreciated :) @steveblue @surya-pabbineedi @marjan-georgiev @Prasanth-Boyina (or someone). Thanks in advance!

[mdoy179]

I also need this change. Can this be reviewed and merged? Thanks! @surya-pabbineedi @marjan-georgiev @Prasanth-Boyina