Refactor the React OpenAPI admin framework to support fully customizable field rendering and UI composition. (#11)

# Summary

Refactor the React OpenAPI admin framework to support fully customizable field rendering and UI composition.

## Changes

### Admin UI Customization

* Added support for custom:

  * Dashboard component
  * Layout component
  * Login page component
* Introduced `AdminAppProps` and extended `Admin` configuration API.
* Renamed internal dashboard implementation to `DefaultDashboard`.

### Field Component Architecture

* Extracted field rendering into dedicated field components:

  * TextField
  * NumberField
  * BooleanField
  * DateField
  * EnumField
  * RelationField
  * ObjectField
  * FallbackField
  * DateRangeField
  * NumberRangeField
* Added `defaultFieldComponents` registry.
* Refactored `FormField` to resolve components dynamically from a component map instead of hardcoded field type handling.

### Resource Customization

* Added `FieldComponents` support across:

  * Admin
  * ResourceView
  * GenericForm
  * useResource
* Introduced wrapped `FormField` and `GenericForm` components generated from configured field overrides.

### Table Customization

* Added `EnhancedTableComponents`.
* Added support for custom cell renderers per field type.
* Enabled custom rendering for both desktop and mobile table layouts.

### Filter Improvements

* Exported `FilterAutocomplete`.
* Added support for custom date-range and number-range filter components.
* Added filter component extension points.
* Updated filter option label resolution to support `displayFormat`.

### Display Formatting

* Replaced `displayField` usage with `displayFormat`.
* Added template-based display rendering support through `resolveTemplate`.
* Improved relation display configuration handling.

### TypeScript Improvements

* Added TypeScript as a project dependency.
* Removed multiple `@ts-ignore` usages.
* Added strongly typed Axios wrapper methods with generic response support.
* Improved typing across hooks and component interfaces.

### OpenAPI Configuration Validation

* Added validation for enum fields without enum values.
* Added validation for relation resources missing `referenceOptions.enumOption`.
* Improved relation metadata propagation during schema parsing.

### Library Exports

* Exported:

  * Field component types
  * Override types
  * EnhancedTable
  * GenericForm
  * ResourceView
  * Field components and defaults
* Expanded public API surface for consumers extending the framework.

## Benefits

* Enables complete UI customization without modifying framework internals.
* Simplifies creation of custom field types and renderers.
* Improves type safety and developer experience.
* Provides consistent extension points for forms, tables, filters, and admin layouts.
* Makes the framework more suitable for reusable library distribution.

Reviewed-on: #11
Co-authored-by: Vishesh 'ironeagle' Bangotra <aetoskia@gmail.com>
Co-committed-by: Vishesh 'ironeagle' Bangotra <aetoskia@gmail.com>

react-openapi/components/GenericForm.tsx

@@ -7,6 +7,7 @@ import {
   CircularProgress,
 } from '@mui/material';
 import { ResourceConfig } from '../types/config';
+import { FieldComponents } from '../types/overrides';
 import { useUpload } from '../providers/UploadProvider';
 import { useQueries } from '@tanstack/react-query';
 import { useResource } from '../hooks/useResource';
@@ -21,6 +22,7 @@ interface GenericFormProps {
   loading?: boolean;
   readOnly?: boolean;
   onEditClick?: () => void;
+  fieldComponents: FieldComponents;
 }
 
 export default function GenericForm({
@@ -31,6 +33,7 @@ export default function GenericForm({
   loading: saving,
   readOnly = false,
   onEditClick,
+  fieldComponents,
 }: GenericFormProps) {
   initialData = initialData || {};
   const [formData, setFormData] = React.useState(initialData);
@@ -54,7 +57,7 @@ export default function GenericForm({
     queries: allRelations.map(relName => {
         const relatedRes = appConfig?.resources.find(r => r.name === relName);
         // eslint-disable-next-line react-hooks/rules-of-hooks
-        const { getListQueryOptions } = useResource(relatedRes!);
+        const { getListQueryOptions } = useResource(relatedRes!, { fieldComponents });
         return {
             ...getListQueryOptions(),
             enabled: !!relatedRes,
@@ -117,6 +120,7 @@ export default function GenericForm({
           uploading={uploading}
           baseUrl={appConfig?.baseUrl || ""}
           relationDataMap={relationDataMap}
+          components={fieldComponents}
         />
       ))}