refactor: tools folder inside pages

src/pages/tools/string/uppercase/index.tsx

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+import { Box } from '@mui/material';
+import React from 'react';
+import * as Yup from 'yup';
+
+const initialValues = {};
+const validationSchema = Yup.object({
+  // splitSeparator: Yup.string().required('The separator is required')
+});
+export default function Uppercase() {
+  return <Box>Lorem ipsum</Box>;
+}

src/pages/tools/string/uppercase/meta.ts

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+import { defineTool } from '@tools/defineTool';
+import { lazy } from 'react';
+// import image from '@assets/text.png';
+
+export const tool = defineTool('string', {
+  name: 'Uppercase',
+  path: 'uppercase',
+  // image,
+  description: '',
+  shortDescription: '',
+  keywords: ['uppercase'],
+  component: lazy(() => import('./index'))
+});

src/pages/tools/string/uppercase/service.ts

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+export function UppercaseInput(input: string): string {
+  return input.toUpperCase();
+}

src/pages/tools/string/uppercase/uppercase.service.test.ts

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+import { describe, expect, it } from 'vitest';
+import { UppercaseInput } from './service';
+
+describe('UppercaseInput', () => {
+  it('should convert a lowercase string to uppercase', () => {
+    const input = 'hello';
+    const result = UppercaseInput(input);
+    expect(result).toBe('HELLO');
+  });
+
+  it('should convert a mixed case string to uppercase', () => {
+    const input = 'HeLLo WoRLd';
+    const result = UppercaseInput(input);
+    expect(result).toBe('HELLO WORLD');
+  });
+
+  it('should convert an already uppercase string to uppercase', () => {
+    const input = 'HELLO';
+    const result = UppercaseInput(input);
+    expect(result).toBe('HELLO');
+  });
+
+  it('should handle an empty string', () => {
+    const input = '';
+    const result = UppercaseInput(input);
+    expect(result).toBe('');
+  });
+
+  it('should handle a string with numbers and symbols', () => {
+    const input = '123 hello! @world';
+    const result = UppercaseInput(input);
+    expect(result).toBe('123 HELLO! @WORLD');
+  });
+});