v0.1.0

v0.1.0 is the first release of signy, a library for generating signed URLs on embedded devices using asymmetric cryptography. This initial release includes the following features.

• Integration with the Arm Platform Security Architecture (PSA) Crypto API for all signing operations, ensuring that private keys can remain in secure storage and any hardware acceleration available on a device can be leveraged.
• Zephyr module support, making it easy to include the library in existing Zephyr projects.
• A basic example, which demonstrates how to interface with signy and supports generating signed URLs over a serial connection to a device.