String codec for KV paths.

[huntc]

Provides a string encoding/decoding for KV paths.

[Copilot]

Pull Request Overview

This PR implements string encoding and decoding functionality for KV paths by adding Display and FromStr traits to the Path type. The implementation uses URL encoding to handle special characters and introduces a quoting mechanism to distinguish string names from numeric values.

• Adds Display trait implementation for converting paths to string representation with URL encoding
• Adds FromStr trait implementation for parsing paths from strings with error handling
• Introduces comprehensive test coverage for both encoding and decoding scenarios

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
edfsm-kv-store/src/path.rs	Implements Display and FromStr traits for Path with URL encoding/decoding logic and comprehensive tests
edfsm-kv-store/Cargo.toml	Adds url-escape dependency for URL encoding functionality
Cargo.toml	Adds url-escape workspace dependency