refactor: Break apart monolithic configuration schema (#1977)

[skip ci]

src/config/schema/image.ts

@@ -0,0 +1,12 @@
+import { z } from 'zod';
+import { actionsSchema } from './actions/types';
+import { imageBaseConfigSchema, imageConfigDefault } from './common/image';
+
+export const imageConfigSchema = imageBaseConfigSchema
+  .extend({
+    zoomable: z.boolean().default(imageConfigDefault.zoomable),
+  })
+  .merge(actionsSchema)
+  .default(imageConfigDefault);
+
+export type ImageViewConfig = z.infer<typeof imageConfigSchema>;