refactor: Break apart monolithic configuration schema (#1977)

[skip ci]

src/config/schema/overrides.ts

@@ -0,0 +1,13 @@
+import { z } from 'zod';
+import { advancedCameraCardConditionSchema } from './conditions/types';
+
+export const overridesSchema = z
+  .object({
+    conditions: advancedCameraCardConditionSchema.array(),
+    merge: z.object({}).passthrough().optional(),
+    set: z.object({}).passthrough().optional(),
+    delete: z.string().array().optional(),
+  })
+  .array()
+  .optional();
+export type Overrides = z.infer<typeof overridesSchema>;