chore: Type examplePlugin

package/example/src/frame-processors/ExamplePlugin.ts

@@ -2,7 +2,14 @@ import { VisionCameraProxy, Frame } from 'react-native-vision-camera'
 
 const plugin = VisionCameraProxy.getFrameProcessorPlugin('example_plugin')
 
-export function examplePlugin(frame: Frame): string[] {
+interface Result {
+  example_array: (string | number | boolean)[]
+  example_str: string
+  example_bool: boolean
+  example_double: number
+}
+
+export function examplePlugin(frame: Frame): Result {
   'worklet'
 
   if (plugin == null) throw new Error('Failed to load Frame Processor Plugin "example_plugin"!')
@@ -13,5 +20,5 @@ export function examplePlugin(frame: Frame): string[] {
     someNumber: 42,
     someObject: { test: 0, second: 'test' },
     someArray: ['another test', 5],
-  }) as string[]
+  }) as unknown as Result
 }