chore: bump version to 2.1.0 for new release (#3)

Bumps version from 2.0.1 to 2.1.0 to trigger a new release.

This release includes:
- Complete MCP specification (2025-11-25) implementation
- 70+ tools across Navigation, Workspace, Search, Memory, and Skills categories
- Agent Skills framework with 7 built-in skills
- Multi-language symbol detection (Rust, Python, TypeScript/JavaScript, Go)
- Security fixes (path traversal protection, regex escaping, canonical paths)
- Workflow improvements (Release, Dependabot, SDK Sync)
- 244 unit tests + integration tests

Author: rishitank

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "context-engine-rs"
-version = "2.0.1"
+version = "2.1.0"
 edition = "2021"
 rust-version = "1.82"
 description = "A high-performance MCP server for AI-powered codebase context retrieval"