chore: reorganize shell completion files in rpm spec

[dengbo11]

Moved shell completion files for ll-builder command from main package to linglong-builder subpackage. The bash, zsh, and fish completion files are now properly grouped together under the builder package where they belong, rather than being split between main package and builder package.

This change ensures that shell completions are correctly associated with their respective packages and improves package organization. The ll- builder command completions should only be installed when the builder component is present.

Influence:

1. Verify ll-builder command completions work after installing linglong- builder package
2. Check that main linglong package no longer contains ll-builder completion files
3. Test shell completion functionality for both ll-cli and ll-builder commands
4. Verify package installation and dependency resolution works correctly

[deepin-ci-robot]

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