Json schema validation for table config

Currently, we're doing manual checks for each field in the schema regarding data type, range etc...

Instead, we can use Json schema (https://json-schema.org/) to use annotation for auto-validation of such things.

Related to #5942

Review the existing manual checks for each table-config schema field and the context in related issue #5942. The issue provides no file or test entry point, so first locate those checks and determine how JSON Schema annotations would cover data types and ranges; done should mean table configuration is validated through JSON Schema rather than separate manual checks.

Written by the indexing model from the issue text.