chore: release v0.6.4

[github-actions]

🤖 New release

• rmcp-macros: 0.6.3 -> 0.6.4
• rmcp: 0.6.3 -> 0.6.4 (✓ API compatible changes)

Changelog

rmcp-macros

0.6.4 - 2025-09-10

Added

• add title field for data types (#410)

Fixed

• generate simple {} schema for tools with no parameters (#425)

Other

• add nvim-mcp project built by rmcp (#422)

rmcp

0.6.4 - 2025-09-10

Added

• implement context-aware completion (MCP 2025-06-18) (#396)
• add title field for data types (#410)

Fixed

• crates/rmcp/src/handler/client/progress.rs dispacher-> dispatcher (#429)
• build issue due to missing struct field (#427)
• generate simple {} schema for tools with no parameters (#425)

Other

• Skip notification in initialization handshake (#421)
• add nvim-mcp project built by rmcp (#422)

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