FieldConfig: Unify the custom and standard registry (#23307)

* FieldConfig: Unifying standard and custom registry

* Adding path to option items to make id be prefixed for custom options

* Code updates progress

* Add docs back

* Fix TS

* ld overrides tests from ui to data

* Refactor - rename

* Gauge and table cleanup

* F-I-X e2e

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

public/app/features/dashboard/components/Inspector/PanelInspector.tsx

@@ -181,7 +181,7 @@ export class PanelInspector extends PureComponent<Props, State> {
     const processed = applyFieldOverrides({
       data,
       theme: config.theme,
-      fieldOptions: { defaults: {}, overrides: [] },
+      fieldConfig: { defaults: {}, overrides: [] },
       replaceVariables: (value: string) => {
         return value;
       },