Add shell completion

[thelovekesh]

• Add shell completion for all commands
• Update install wpm scripts to init shell completion

[github-actions]

📦 wpm cli builds 📦

• darwin/amd64 - build
• darwin/arm64 - build
• linux/amd64 - build
• linux/arm/v6 - build
• linux/arm/v7 - build
• linux/arm64 - build
• linux/ppc64le - build
• linux/riscv64 - build
• linux/s390x - build
• windows/amd64 - build
• windows/arm64 - build

[gemini-code-assist]

Code Review

This pull request implements comprehensive shell completion support for the WPM CLI across Bash, Zsh, Fish, and PowerShell. It introduces a new completion package providing dynamic suggestions for package names, types, and licenses, and updates the installation scripts to automatically configure these completions. Feedback highlights the need to deduplicate package names in the completion logic, a bug in the shell installer's path replacement logic for home-relative directories, and a suggestion to use source instead of exec for refreshing the Zsh environment to avoid session disruption.