feat: Add checkPassword util function

[klmhyeonwoo]

Description

• checkPassword 유틸함수가 추가되었어요, 제가 평소 불편했던 점들을 반영한 함수예요
• 최소 및 최대 비밀번호, 대문자 및 소문자 유무, 숫자 및 특수문자 유무를 옵션 값을 통해 쉽게 판별할 수 있어요

const [password, SetPassword] = useState();

... 상태 관련 로직


const isValidPassword = validationUtil.checkPassword(value, { requireSpecialChar: true, requireUppercase: true, minLength: 3, maxLength: 15 });

closes: #15

[klmhyeonwoo]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	68.2%	118 / 173
🔵	Statements	68.2%	118 / 173
🔵	Functions	94.11%	16 / 17
🔵	Branches	91.3%	63 / 69

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
package/validationUtil/checkPassword/index.ts	100%	77.77%	100%	100%

Generated in workflow #44 for commit e207546 by the Vitest Coverage Report Action

[Copilot]

Pull Request Overview

This PR adds a new password validation utility function checkPassword to the validation utilities package. The function provides flexible password validation with configurable options for length constraints and character requirements.

• Adds checkPassword function with options for min/max length and character type requirements
• Includes comprehensive test coverage for various password validation scenarios
• Updates package exports and documentation to include the new utility

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
package/validationUtil/index.ts	Exports the new checkPassword function
package/validationUtil/checkPassword/index.ts	Main implementation of the password validation logic
package/validationUtil/checkPassword/index.test.ts	Test suite covering valid and invalid password scenarios
README.md	Documentation updates with usage examples and API reference

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[prgmr99]

정말 유용하게 사용할 수 있을 것 같아요!!
고생하셨습니다~~👍👍