feat: add tests using vitest

This commit adds basic tests for the conversion of package.json to
jsr.json. It includes test cases for basic package.json and
package.json without files. The tests check if the generated jsr.json
matches the expected output. The commit also includes necessary
test files and updates to the tsconfig.json and vite.config.ts files.

eslint.config.js

@@ -2,7 +2,7 @@ import { ryoppippi } from '@ryoppippi/eslint-config';
 
 export default ryoppippi({
 	svelte: false,
-	ignores: ['tsdown.config.ts'],
+	ignores: ['tsdown.config.ts', 'vitest.config.ts'],
 	typescript: {
 		tsconfigPath: './tsconfig.json',
 		overrides: {

package.json

@@ -25,7 +25,7 @@
 		"release": "nr typecheck && nr test run && nr build && nlx bumpp && npm publish",
 		"lint": "eslint --cache .",
 		"format": "nr lint --fix",
-		"test": "bun test",
+		"test": "vitest",
 		"prepare": "ts-patch install && typia patch && bun run ./scripts/gen_types.ts"
 	},
 	"dependencies": {
@@ -46,7 +46,8 @@
 		"ts-patch": "^3.2.1",
 		"tsdown": "^0.2.4",
 		"typescript": "^5.5.4",
-		"typia": "^6.7.2"
+		"typia": "^6.7.2",
+		"vitest": "^2.0.5"
 	},
 	"packageManager": "pnpm@9.7.0+sha512.dc09430156b427f5ecfc79888899e1c39d2d690f004be70e05230b72cb173d96839587545d09429b55ac3c429c801b4dc3c0e002f653830a420fa2dd4e3cf9cf"
 }