shared currency field + expenses rendered from react-openapi fields

- add CurrencyField renderer (inherits NumberField for editing) with
  cached Intl formatter; route via uiType "currency" in list/detail/form
- add resourceConfig.fieldTypes override applied in AppProvider, so
  amount becomes currency for both Admin and the Expenses page
- render Expenses page through react-openapi fields (ListCellRenderer,
  DetailFieldRenderer, applyDisplayFormat) instead of custom fields
- resolve relative /uploads entity logos against the API base URL on
  load so entity logos render on the expenses feed
- drop custom avatar, currency/date formatters from the Expense module

react-openapi/index.ts

@@ -5,6 +5,7 @@ export { useAppContext } from "./src/context/AppContext";
 export { useResource } from "./src/context/useResource";
 export { ListCellRenderer, DetailFieldRenderer, applyDisplayFormat } from "./src/components/fields";
 export { FormFieldRenderer } from "./src/components/fields/FormFieldRenderer";
+export { CurrencyField, formatCurrency } from "./src/components/fields/renderers/CurrencyField";
 export { SseStreamView } from "./src/components/SseStreamView";
 export { SseConnectionStatus } from "./src/components/SseConnectionStatus";
 export { getApi } from "./src/hooks/useApi";