feat: use vitest instead of jest for more speed

vitest.config.ts

@@ -0,0 +1,13 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+	test: {
+		exclude: ['node_modules', 'dist', '.idea', '.git', '.cache', 'packages/discord.js', 'packages/voice'],
+		passWithNoTests: true,
+		coverage: {
+			enabled: true,
+			reporter: ['text', 'lcov', 'clover'],
+			exclude: ['**/dist', '**/__tests__'],
+		},
+	},
+});