refactor: change to MIT license and reformat codes

[zihluwang]

This pull request reformatted all docs and codes, also changed license to MIT license.

[Copilot]

Pull Request Overview

This PR changes the project’s license to MIT and reformats code and documentation for consistency.

• Updated license headers in source and resource files to MIT text
• Reformatted Javadoc blocks and bumped version tags across utilities
• Replaced full Apache LICENSE with a short MIT LICENSE and adjusted contribution docs

Reviewed Changes

Copilot reviewed 73 out of 73 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
crypto-toolbox/src/main/java/com/onixbyte/crypto/algorithm/ecdsa/ECPublicKeyLoader.java	Empty Javadoc before class
common-toolbox/src/main/java/com/onixbyte/common/util/Base64Util.java	Duplicate static field declarations
CONTRIBUTING.md	Inconsistent project name in license section
LICENSE	Replaced Apache text with MIT license
crypto-toolbox/src/main/java/com/onixbyte/crypto/PrivateKeyLoader.java	Bumped interface version to 3.0.0

Comments suppressed due to low confidence (3)

crypto-toolbox/src/main/java/com/onixbyte/crypto/algorithm/ecdsa/ECPublicKeyLoader.java:40

• This Javadoc block is empty; either provide a meaningful class description or remove the block to avoid misleading empty docs.

/**

common-toolbox/src/main/java/com/onixbyte/common/util/Base64Util.java:212

• This static field is declared twice (once above and again here); remove the redundant declaration to prevent confusion.

}

CONTRIBUTING.md:60

• The project name here still refers to "Java Dev Kit" but the repository is now "OnixByte Toolbox"; update for consistency.

By contributing to the Java Dev Kit, you agree that your contributions will be licensed under the