fix(medusa): Support q search in currencies (#6201)

Closes #6175

packages/medusa/src/api/routes/admin/currencies/list-currencies.ts

@@ -21,6 +21,7 @@ import { FeatureFlagDecorators } from "../../../../utils/feature-flag-decorators
  *       type: boolean
  *       x-featureFlag: "tax_inclusive_pricing"
  *   - (query) order {string} A field to sort order the retrieved currencies by.
+ *   - (query) q {string} Term used to search currencies' name and code.
  *   - (query) offset=0 {number} The number of currencies to skip when retrieving the currencies.
  *   - (query) limit=20 {number} The number of currencies to return.
  * x-codegen:
@@ -128,6 +129,13 @@ export class AdminGetCurrenciesParams extends FindPaginationParams {
   @IsOptional()
   code?: string
 
+  /**
+   * Search parameter for currencies.
+   */
+  @IsString()
+  @IsOptional()
+  q?: string
+
   /**
    * Filter currencies by whether they include tax.
    *