feat: Filemagedon

Signed-off-by: Avior <git@avior.me>

src/libs/Schema/Items/SchemaFile.ts

@@ -0,0 +1,21 @@
+import SchemaItem from '../SchemaItem'
+
+export default class SchemaFile extends SchemaItem<File> {
+	constructor () {
+		super()
+		this.parseActions.push((input) => this.isOfType(input) && input.size > 0 ? input : undefined)
+	}
+
+	public extension(ext: string, message?: string): this {
+		this.validations.push({
+			fn: (input) => input.name.endsWith(ext),
+			message
+		})
+
+		return this
+	}
+
+	public override isOfType(input: unknown): input is File {
+		return input instanceof File
+	}
+}