.deb packaging and Discord RPC

[LargeModGames]

This pull request introduces two major features: Discord Rich Presence integration and automated publishing of a binary AUR package (spotatui-bin). It also updates documentation and configuration to support these enhancements, and adds packaging metadata for Debian distribution. Below are the most important changes grouped by theme.

Discord Rich Presence Integration:

• Adds the discord-rich-presence dependency and a new optional feature flag discord-rpc, enabling Discord Rich Presence functionality by default in Cargo.toml. [1] [2] [3]
• Implements the src/discord_rpc.rs module, which manages Discord Rich Presence updates in a background thread and exposes a manager for use by the application. [1] [2] [3]
• Adds a new user-configurable setting, behavior.enable_discord_rpc, to toggle Discord Rich Presence, and updates the settings UI and config handling accordingly. [1] [2]
• Updates README.md with documentation on Discord Rich Presence, including configuration and environment variable overrides. [1] [2]
• Updates the changelog to announce Discord Rich Presence as a new feature.

AUR Binary Package Automation:

• Adds a new GitHub Actions job to .github/workflows/cd.yml and .github/workflows/publish-aur.yml to automatically publish and update the spotatui-bin binary package on the Arch Linux User Repository (AUR), including checksum calculation and PKGBUILD updates. [1] [2]
• Updates installation instructions in README.md to recommend the pre-built spotatui-bin package for Arch Linux users.
• Updates the changelog to announce the new binary AUR package.

Debian Packaging Support:

• Adds the cargo-deb dependency to the CI workflow and a step to build and upload .deb packages for Linux releases. [1] [2] [3]
• Adds Debian package metadata to Cargo.toml for proper packaging.

Version and Metadata Updates:

• Bumps the crate version to 0.35.4 and updates author and repository metadata.

These changes significantly improve user experience by making installation easier and adding Discord integration out of the box.# Summary

[chatgpt-codex-connector]

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