Feature/kv store examples

[godronus]

@qrdl - Please read the Rust example.. it is mostly MCP server assisted.. I read it and it looks ok. It certainly works, but may not be the best implementation

[Copilot]

Pull Request Overview

This PR adds KV store usage examples for both Rust and JavaScript implementations, along with updates to dependency versions across the repository to use workspace-managed dependencies and newer SDK versions.

• Adds new KV store example applications in Rust and JavaScript demonstrating usage of key-value storage APIs
• Updates SDK dependencies to use workspace management in Rust projects (fastedge 0.3.1, proxy-wasm 0.2.4)
• Updates JavaScript SDK to version 2.1.0 across all JavaScript projects
• Updates AssemblyScript dependencies and fixes imports to use the new fastedge namespace

Reviewed Changes

Copilot reviewed 37 out of 45 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
rust/http/kv-store/*	New Rust KV store example with support for get, scan, zscan, zrange, and bfExists operations
javascript/src/kv-store/*	New JavaScript KV store example with TypeScript implementation and query parameter validation
rust/Cargo.toml	Adds workspace dependencies for fastedge and proxy-wasm
rust/*/Cargo.toml	Updates to use workspace-managed dependencies
javascript/README.md	Adds KV store link to documentation (contains incorrect path)
assemblyscript/*	Updates dependencies and fixes imports for new SDK structure
github-actions/*	Updates SDK versions to 2.1.0

Files not reviewed (5)

• assemblyscript/package-lock.json: Language not supported
• github-actions/multi-app-workflows/package-lock.json: Language not supported
• github-actions/single-app-workflows/package-lock.json: Language not supported
• javascript/src/mcp-server/package-lock.json: Language not supported
• javascript/src/static-assets/package-lock.json: Language not supported

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