chore(eslint.config.js): Add ignore rule for Svelte test files

This commit adds a new ignore rule to the ESLint configuration. The rule
ignores all Svelte files in the 'tests' directory. This change prevents
linting errors in test files from interfering with the development process.

Author: ryoppippi

eslint.config.js

@@ -2,6 +2,7 @@ import { ryoppippi } from '@ryoppippi/eslint-config';
 
 export default ryoppippi({
 	svelte: true,
+	ignores: ['tests/**/*.svelte'],
 	typescript: {
 		tsconfigPath: './tsconfig.json',
 	},