feat: allow custom TypeScript target

This change allows the TypeScript compiler target to be customized. If no
target is specified, it defaults to ES2020. This provides more flexibility
for users who may want to target different JavaScript versions.

packages/unplugin-typia/src/core/typia.ts

@@ -94,7 +94,7 @@ async function getProgramAndSource(
 	const tsSource = ts.createSourceFile(
 		id,
 		source,
-		ts.ScriptTarget.ES2020,
+		compilerOptions.target ?? ts.ScriptTarget.ES2020,
 	);
 	const host = ts.createCompilerHost(compilerOptions);