feat: add dev tools

[antonreshetov]

Select "massCode" > "Developer Tools" or cmd+. or ctrl+.

Text tools:

• Case Converter
• Slug Generator
• Sort Lines
• URL Parser

Cryptography / Security:

• Hash Generator
• HMAC Generator
• Password Generator
• UUID Generator

Encoders / Decoders:

• URL Encoder / Decoder
• Base64 Encoder / Decoder