Issue SchemaStore#4203: Update metricshub.json Schema

- Properly defined the `off` level for `loggerLevel`.
- Set the default `loggerLevel` to `error`.
- Updated `stateSetCompression` to accept `suppressZeros` or `none`.
- Added `patchDirectory` as a string field.
- Defined `additionalConnectors`schema.
- Defined `monitorFilters` as an array.
- Set `resolveHostnameToFqdn` to false by default.
- Defined `jdbc` schema.
- Fixed `retryInterval` schema.